three-wire input

- alarm input
- analog input
- antenna input
- asymmetrical input
- automatic input
- balanced input
- cable input
- clock input
- continuous data input
- digital input
- direct input
- disable input
- document input
- fax number input
- forced count code input
- full-scale input
- high-frequency input
- high-level input
- high-resistance input
- inhibiting input
- inverted input
- inverting input
- microphone input
- multiple-wire input
- noninverting input
- peak-to-peak signal input
- pilot input
- rated input
- reset input
- select input
- single-wire input
- telephone number input
- three-wire input
- touch input
- transformerless input
- two-frequency input
- two-wire input
- unbalanced input
- verbal input
- video input

- 2D design system
- 2-D draughting system
- 2D milling CAM system
- 3 nonsimultaneous axes control system
- 3D CAD system
- 3D design system
- 3D milling CAM system
- 3-D surface-modeling system
- 3-D system
- abrasive waterjet cutting system
- absolute control system
- absolute dimension measuring system
- accident-protection system
- accountancy system
- accounting data system
- ACO system
- acoustic feedback control system
- acquisition system
- active enclosure system
- adaptable system
- adaptive CNC system
- adaptive control constraint system
- adaptive control system
- adaptive pulsing system
- adaptive robot system
- add-on NC programming system
- administrative information data system
- administrative information system
- ADR system
- advanced command data system
- advanced data analysis system
- advanced data display system
- advanced display system
- advanced integrated data system
- advanced interactive debugging system
- advanced management information system
- advisory system
- AGV system
- air flotation system
- air-bearing system
- air-cooling system
- air-delivery system
- air-gaging system
- airlock system
- air-oil mist lubrication system
- air-plasma arc-profiling system
- air-purge system
- alarm system
- all-enveloping guard system
- analog computing system
- analog recording system
- angstrom-positioning system
- antideflection system
- antilock brake system
- antisag system
- application-specific system
- APT generating expert system
- Archimedes system
- array system
- AS/RS system
- assembly management system
- assembly system
- attitude display system
- autolube system
- automated communications and messages processing system
- automated design and optimization of control system
- automated design system
- automated digital design system
- automated industrial management system
- automated information data system
- automated information dissemination system
- automated information retrieval system
- automated inventory distribution system
- automated machining system
- automated management information system
- automated management system
- automated measuring system
- automated parts input-output system
- automated reliability and maintenance management system
- automated storage control system
- automatic alignment-and-centering system
- automatic call distribution system
- automatic CAM system
- automatic chuck-changing system
- automatic data acquisition system
- automatic data distribution system
- automatic data system
- automatic diagnostic-and-recovery system
- automatic display plotting system
- automatic distributive numerical control system
- automatic fixturing system
- automatic gaging-and-compensating system
- automatic measurement-and-compensation system
- automatic message accounting system
- automatic message distribution system
- automatic pallet storage/retrieval system
- automatic program transfer system
- automatic record evaluation system
- automatic telemetry system
- automatic test analysis system
- automatic test system
- automatic testing, evaluating and reporting system
- automatic tool cassette changer system
- automatic tool retraction system
- automatic tool retraction/correction/reentry system
- automatic tool wear/tool broken sensing system
- automatically taught system
- automation system
- autonomous system
- autopatch system
- AWS system
- axis drive system
- axis motor system
- axis-stopping system
- backlash-free friction system
- back-to-back system
- balance system
- balanced system of forces
- balanced system
- bar feed system
- bar pulling system
- bar pusher system
- barring coding system
- base coordinate system
- base data system
- base file system
- base operating information system
- basic disk operating system
- basic hole system
- basic input/output system
- basic NC system
- basic programming system
- basic shaft system
- batching system
- batch-machining system
- battery system
- BCC management information system
- beam delivery system
- belt turnover system
- belt twist system
- binary system
- binary vision system
- biped robotic system
- block-tool system
- block-type tool change system
- bonded stores system
- boring system
- bought-in control system
- brake system
- branch information system
- breakaway system
- breathing system
- broad system of ordering
- BTA deep-hole-drilling system
- BTA-style deep-hole-drilling system
- bug-free system
- building block system
- bulk system
- business information system
- buy-and-plug-in system
- C/C system
- cable and hose carrying system
- CAD access system
- CAD system
- CAD/CAM system
- CAD/CAM/CAE and product data management system
- CAD/CAM/CAE system
- CAD/CAPP/CAM system
- CADAR system
- CAD-integrating system
- CAD-only system
- CAE system
- CAE/CAD/CAM system
- CAG system
- CAM system
- cam-and-lever system
- capacitance-based measuring system
- CAPP system
- capture system
- carrierband system
- cart/pallet transfer system
- Cartesian coordinate system
- cassette jaw-change system
- cell control system
- cell management system
- cell-type system
- cellular manufacturing system
- central analog data distributing and controlling system
- central automatic message accounting system
- central storage system
- centralized control system
- centralized coolant and extractor system
- centralized swarf conveying system
- centralized swarf removal system
- chain conveyor system
- check system
- checking system
- checkout system
- chiller system
- chip conveyor system
- chip guard system
- chip-evacuation system
- chuck/chuck jaw changing system
- chucking system
- chuck-jaw system
- chuck-loading system
- CIM system
- circular monitoring system
- circular part-processing system
- circulating lubrication system
- circulating oil system
- circulation system
- clamping system
- closed cooling system
- closed loop control system
- closed loop machine control system
- closed loop size control system
- closed loop system
- closed-proprietary system
- CM system
- CNC hardware system
- CNC machine tool system
- CNC programming system
- CNC system
- CNC transfer system
- CNC-ACC system
- CNC-control system
- coherent system of units
- collecting system
- collet pad top jaw system
- combined cooling system
- combined production system
- command-line NC system
- commercial vision system
- communication system
- companion system
- comprehensive power measurement system
- computer analysis and design system
- computer automation real-time operating system
- computer data communication system
- computer NC system
- computer system
- computer vision system
- computer-aided design support system
- computer-aided dispatch system
- computer-aided gaging system
- computer-aided programming system
- computer-aided telemetry system
- computer-aided test system
- computer-assisted command system
- computer-assisted message processing system
- computer-assisted microfilm retrieval system
- computer-assisted operation sequence planning system
- computer-automated machine-tool system
- computer-automated test system
- computer-based management system
- computer-based message system
- computer-controlled materials-handling system
- computer-controlled system
- computer-coordinated measuring system
- computer-directed swing-arm tool-changing system
- computer-driven control system
- computer-hosted manufacturing system
- computer-integrated manufacturing system
- computer-integrated system
- computerized information retrieval system
- computerized machine control system
- computerized manufacturing system
- computerized numerical control system
- computerized production control system
- computerized shopfloor data collection system
- computer-oriented production management system
- computer-oriented system
- computing system
- concurrent force system
- conductor system
- conservative system
- constant delivery system
- constant volume system
- constant-contact scanning system
- constraint satisfaction system
- continuous feedback control system
- continuous flow system
- continuous-path CNC system
- continuous-path control system
- contouring control system
- contouring system
- controlled path system
- controlling system
- conventional ACC system
- conversational analysis and drafting system
- conveying system
- conveyor system
- conveyoring system
- conveyorized work-handling system
- coolant clarification system
- coolant laundering system
- coolant mist system
- coolant recirculating system
- coolant recovery system
- coolant recycling system
- coolant supply system
- coolant-circulating system
- coolant-thru-body system
- cooling system
- coordinate drive system
- coordinate system
- coprocessor board system
- copymill control system
- corporate information and office system
- coupling system
- CPS system
- CRT control system
- CRT system
- customer-oriented system
- customized FMS control system
- cut-piece transfer system
- cycloidal tooth system
- data base management system
- data communication system
- data control system
- data input management system
- data management system
- data origination system
- data processing system
- data retrieval system
- data transfer system
- datum system for geometrical tolerancing
- datum system
- DDM system
- decentralized DNC system
- decision enabling system
- decision support system
- dedicated production system
- deep-hole-drilling system
- defect-free machining system
- delivery system
- demand pull flexible system
- demand push flexible system
- departmental management system
- descaling system
- design coordinate system
- design support system
- design-automation system
- design-for-manufacturing system
- design-with-feature system
- desk-top publishing system
- deterministic system
- dexel-based system
- diagnostic communication control system
- diagnostic computer control system
- dialog system
- diamond-lapping system
- digital readout system
- digitizing system
- digitizing/data capture system
- dimensional verification system
- direct impingement starting system
- direct lubrication system
- direct NC system
- discrete-continuous system
- dispatcher system
- distributed computer system
- distributed mass-spring system
- distributed microprocessor system
- distributed processing system
- distributed quality system
- distributed system
- distributive numerical control system
- DNC flexible machining system
- DNC machine control system
- DNC machine tool control system
- DNC system
- DNC/FM system
- document processing system
- document retrieval system
- document search system
- domain-expert system
- Doppler system
- DOS CAM system
- double tube system
- dowel pin system
- DRO system
- drop-feed-lubrication system
- DTP system
- dual laser optical system
- dual laser referencing system
- dual system
- dual-beam LDDM system
- dual-pallet shuttle system
- dual-shaft electric propulsion system
- dynamic beam focusing laser system
- dynamic data system
- dynamic mapping system
- early warning system
- eddy current damper system
- edge-sensing system
- edge-type positioning system
- eight-station pallet system
- electrical contact tracing system
- electrofluidic control system
- emergency protection system
- enclosure system
- encoder checking system
- endpoint locating system
- energy-adaptive system
- energy-saving drive system
- engine starting system
- entry-level NC system
- environmental control system
- equivalent rigid link system
- equivalent systems of forces
- ESD system
- estimating system
- example-driven system
- expert control system
- expert process planning system
- expert system
- external box system
- extractor system
- fact retrieval system
- factory automation system
- fault detection system
- fault-signal system
- FBG system
- feasibility routing system
- feature-based CAM system
- feature-based system
- feed system
- feedback control system
- feedback gaging system
- feedback position control system
- feedback system
- feed-drive system
- feedforward compensatory control system
- feed-only AC system
- feed-overriding system
- FFS system
- file control system
- finite capacity scheduling system
- fixed coordinate system
- fixed-feature NC system
- fixed-rail system
- fixture design system
- fixture system
- fixturing system
- flanged pipe system
- flexible assembly system
- flexible automated manufacturing system
- flexible automation system
- flexible computer-controlled robotic system
- flexible fabricating system
- flexible fixturing system
- flexible handling system
- flexible laser optical system
- flexible laser system
- flexible lathe system
- flexible machine system
- flexible machining center system
- flexible machining system
- flexible manufacturing system
- flexible NC system
- flexible press system
- flexible tooling system
- flexible transfer system
- flexible turning system
- flood coolant system
- flow-line production system
- flow-type manufacturing system
- fluid management system
- fluid power system
- flush-type cooling system
- fly system
- FMS operating system
- FMS/CAD/CAM system
- FMS-type production system
- force measurement system
- force sensory system
- force system
- force-sensing system
- forecasting system
- four-station pallet system
- four-tier quality system
- FROG navigation system
- FROG system
- full-blown system
- fully specified system
- gage system
- gaging computer system
- gaging-and-compensating system
- gantry loading system
- gantry-based turning system
- gantry-style motion system
- gas-turbine starting system
- gating system
- gear roller system
- gear system
- gear testing system
- general information retrieval system
- generative planning system
- generic control system
- generic messaging system
- generic system
- glass fiber system
- glazing system
- goal-seeking system
- graphic numerical control system
- graphic processing system
- graphics system
- graphics-oriented system
- grating measuring system
- gravity oil system
- gray scale imaging system
- grinder vision system
- group control system
- guarding system
- guidance system
- guiding system
- handling system
- handwriting-input system
- hard-automated system
- hardware NC system
- hardware support system
- head change system
- head changer system
- head-changing flexible manufacturing system
- help system
- hierarchical coding system
- hierarchical control system
- hierarchical information control system
- high-noise-immunity system
- high-rise system
- high-speed positioning system
- high-speed-processor control system
- high-volume system
- Hirth gear-tooth system
- holding system
- holding tool system
- hole system
- holonomic system
- host computer-assisted programming system
- host distributive numerical control system
- hybrid computing system
- hydraulic oil system
- hydraulic system
- hydraulic-circuit system
- hypertext system
- ID system
- IDNC system
- illumination system
- image detection system
- image processing system
- imaging system
- IMC system
- immersion-washing system
- inconsistent system of equations
- incremental measuring system
- index system
- indirect lubrication system
- individual lubrication system
- inductive telemetry system
- inductively guided cart system
- industrial vision system
- in-feed system
- inference system
- in-floor chip-disposal system
- information infrastructure system
- information logical system
- information processing system
- information storage and retrieval system
- information system
- information-gathering system
- information-management system
- information-sharing system
- infrared imaging system
- infrared system
- in-house minicomputer system
- in-house system
- inlet control system
- in-process gaging system
- in-process sensing system
- in-process storage system
- insert-selection system
- instrumentation system
- insulating system
- integral movement monitoring system
- integrated CAD/CAPP/CAM system
- integrated CAM system
- integrated circuit numerical control system
- integrated computer system
- integrated information system
- integrated machine system
- integrated machining system
- integrated manufacturing and assembly system
- integrated manufacturing system
- integrated NC machine system
- integrated production system
- integrated sensor system
- intelligent control system
- interactive control system
- interactive graphics processing system
- interactive manufacturing control system
- interconnection system
- interdepartmental communication system
- interferometer measuring system
- interlocking system
- interrupt-driven system
- inventory-management system
- involute tooth system
- IR fault-signal system
- IR system
- ISO system of limits and tolerances
- isolated word recognition system
- jig boring measuring system
- job shop-type flexible system
- joint-actuation system
- just-in-time production system
- kanban pull system
- kinetic control system
- kitting system
- knowledge base management system
- knowledge system
- knowledge-based information system
- knowledge-based system
- krypton laser system
- labeling system
- labor-intensive system
- language-based NC system
- laser beam orientation system
- laser beam positioning system
- laser calibration system
- laser combination energy system
- laser digitizing system
- laser driving system
- laser full automated system
- laser inspection system
- laser interferometer measuring system
- laser machining system
- laser metalworking system
- laser micrometer system
- laser monitoring system
- laser mount system
- laser optical transformation system
- laser pulse power system
- laser pump system
- laser referencing system
- laser thread measurement system
- laser transducer system
- laser-cutting system
- laser-gaging system
- layered control system
- LDDM system
- lead screw drive system
- learning system
- library reference system
- library system
- light guide system
- light recognition system
- line motion control system
- line motion system
- line path system
- linear index system
- linear system of constant coefficients
- linear time invariant system
- linear time-varying system
- linear-encoder-equipped system
- LMFC system
- load/unload system
- loading robot system
- load-monitoring system
- local communications system
- logistics system
- look-up table system
- low-loss optical system
- low-volume lubricant delivery system
- lube system
- lubrication system with continuous delivery
- lubrication system with cyclic delivery
- lubrication system with performance control
- lubrication system without performance control
- lubrication system
- M system
- machine control system
- machine coordinate system
- machine health-monitoring system
- machine management system
- machine surveillance system
- machine tool capability-conditioning system
- machine tool system
- machine vision system
- machine/control system
- machine/tool/workpiece system
- machine-flexible system
- machine-zero reference system
- machining-cell system
- magnetic control system
- magnetic shaft suspension system
- main control system
- maintenance tracking system
- make-up system
- management control system
- management information system
- management system
- management-and-manufacturing system
- managerial reporting system
- man-computer system
- man-machine system
- man-plus-machine system
- manual data input system
- manual programming system
- manufacturing execution system
- manufacturing optimization system
- manufacturing software system
- manufacturing system
- many-degrees-of-freedom system
- many-variable system
- mass-elastic system
- master manufacturing control system
- master-slave control system
- material flow system
- material movement system
- material storage system
- materials-handling control system
- materials-handling system
- matrix array system
- matrix-type system
- MDI contouring control system
- MDI control system
- MDI NC system
- mean line system
- measurement/inspection system
- measuring coordinate system
- measuring system
- measuring/compensation system
- mechanical interface coordinate system
- memory NC system
- memory system
- menu drive system
- menu system
- menu-driven programming system
- metalforming production system with robots
- metalworking laser system
- metamorphic system
- metareasoning system
- metering system
- metrology system
- MIC system
- micro CAD/CAM programming system
- microadjustment system
- microchip-managed control system
- microdispensing system
- microintegrated system
- microload system
- micropackaged distributed system
- microprocessor based system
- microprocessor CNC system
- microprocessor system
- microprocessor-development system
- microstep control system
- microwave drill detection system
- milling CAM system
- milling system
- minicomputer-based numerical control system
- minicomputer-based system
- minicomputer-based test system
- miniload automated storage and retrieval system
- miniload system
- minimal constraint system
- minimum phase shift system
- mist-cooling system
- mixed forging-machining system
- mobility system
- model reference adaptive system
- moderately sized manufacturing system
- modular clamping system
- modular component tooling system
- modular fixture system
- modular holding system
- modular system
- modular tooling system
- modular work holding system
- monitoring system
- monorail material handling system
- motor position sensing system
- mounting system
- MPM system
- MRC system
- MRP system
- MS-DOS system
- multiaxis laser system
- multimachine system
- multimedia system
- multinetwork system
- multipallet system
- multiple computer system
- multiple laser technology system
- multiple pallet changer system
- multiple pallet handling system
- multiple parts feeding system
- multiple sensory system
- multiple spindle head handling-and-changing system
- multiple system of indexing
- multiple-gun spraying system
- multipoint lubrication system
- multipoint network control system
- multiprocessing system
- multiprocessor NC system
- multiprocessor system
- multiproduct manufacturing system
- multiprofile tool system
- multiprogramming system
- multirobot system
- multisensor system
- multiserver queueing system
- multistage system
- multitasking control system
- multiterminal system
- multiuser system
- multivendor information system
- multiwindowing software system
- Nagare system
- narrowly defined expert system
- national information system
- navigation system
- NC contouring system
- NC machine system
- NC part-programming system
- NC system
- NC tooling system
- NC/TP system
- nesting system
- network computer system
- network switching system
- network system
- noise diagnostic system
- noncircular copy-turning system
- noncompensated system
- noncontact laser marking system
- noncontact microwave system
- nonexpert system
- non-NC system
- numerical computer control system
- numerical contour control system
- numerical control system
- numerically controlled tool point system
- object-oriented system
- office system
- office-based programming system
- off-line adviser-type expert system
- off-line programming system
- off-line system
- off-the-shelf system
- oil mist system
- oil scavenge system
- oil system
- oil wash system
- oil-recirculating system
- oligarchical manufacturing system
- OLP system
- one man/one machine system
- one man-one operation-one job system
- one-machine flexible system
- one-piece tape spar-measuring system
- one-shot lubrication system
- on-line information system
- on-line process system
- on-line retrieval system
- on-line system
- on-line tool control system
- on-machine gaging system
- on-machine probing system
- on-off control system
- open architecture system
- open cooling system
- open system
- open-front system
- open-loop control system
- operating system
- operational system
- operator guidance system
- operator-controlled NC system
- optical detection system
- optical laser ranging system
- optical MAP system
- optical measurement/inspection system
- optical recognition system
- optical system for laser processing
- optical tracer backup system
- optical transmission system
- opti-feed system
- optimal-position control system
- order-driven system
- order-entry system
- order-picking system
- oscillating system
- oscillatory system
- out-feed system
- output collecting system
- overall system
- p.-t.-p. NC system
- package confinement system
- paging system
- pallet conveyor system
- pallet gripper system
- pallet ID system
- pallet storage system
- pallet storage/changer system
- pallet/platen transfer system
- pallet/robot flexible-machining system
- pallet-based materials handling system
- pallet-based system
- pallet-changer system
- pallet-coding system
- pallet-handling system
- palletized tool magazine system
- pallet-loading system
- pallet-moving system
- pallet-shuttle change system
- pallet-transfer system
- pallet-transport system
- paperless NC system
- parallel force system
- parallel lubrication system
- parametric CNC system
- part flow system
- part handling-and-storage system
- part program-editing system
- part queue system
- part-conveying system
- partial laser system
- part-programming system
- part-retrieval system
- passively mode-locked laser system
- path control system of a machine
- path control system
- pattern recognition system
- pattern tracing system
- pattern-directed system
- PC system
- PC-based CAD system
- PC-based vision system
- pendant-mounted CNC system
- perceptual system
- permanent electro system
- personal computer-based robotic vision system
- phase switching control system
- photogrammetric vision system
- photooptic tracing system
- photooptical tracing system
- piece rate system
- plane system of forces
- planner-oriented system
- plant-integration system
- platen system
- platform-independent CAM system
- playback system
- plugboard control system
- plugboard programming system
- point-to-point system
- popular laser system
- position control system
- positioning control system
- postprocess inspection system
- postprocess system
- postprocess-feedback gaging system
- potentiometer-setting system
- power generating system
- power system
- powered clamping system
- powered track system
- powerful robot system
- precision positioning system
- predictive machinability system
- predictive maintenance system
- pre-emptive system
- pregaging system
- preload system
- preset tooling system
- presetting system
- prismatic flexible manufacturing system
- prismatic machining system
- probe communication system
- problem-oriented information system
- process planning system
- process-flexible system
- production control system
- production expert system
- production-monitoring system
- productions system
- product-testing system
- programmable automation system
- programmable control system
- programmable logic control system
- programmable power monitoring system
- programmed sequence control system
- programming system
- proof-of-concept system
- proprietary NC system
- propulsion system
- propulsive system
- protection system
- prototype system
- prototyping system
- pull system of production
- pull system
- punch tape NC system
- purpose-made materials feeding system
- push system
- qualitative system
- quality control system
- quality system
- quantity produced systems
- question-and-answer system
- question-answering system
- queuing system
- quick-change system
- quick-change workpiece-fixturing system
- quick-change-cutter system
- rack system
- rack-picking system
- rail-borne robotic handling system
- rail-guided transport system
- random mission system
- random mix system
- random order system
- ranging system
- readout system
- ready-to-go system
- real-time vision system
- recirculation system
- rectangular coordinate system
- rectangular triordinate system
- reeving system
- reference retrieval system
- reference system
- reflecting high-power beam optical system
- register system
- registration system
- relay ladder logic system
- reporting system
- reprographic system
- resolver system
- restraint system
- RETIC system
- retrieval system
- retrofit system
- return spring system
- RGV pallet delivery system
- rigid track workpiece transport system
- rigid transfer system
- robot control system
- robot gantry storage-and-retrieval system
- robot learning system
- robot parts-handling system
- robot system
- robot teaching system
- robot tool changing system
- robot-based turning system
- robotic system
- robotic vision system
- robotics CAD system
- robotized metalforming system
- robot-like inspection system
- robot-measuring system
- rod memory system
- roller system
- roll-generating system
- rotary transfer system
- rotary-type tool-mounting system
- rotational system
- routing-flexible system
- rule-based expert system
- running fail-safe system
- running system
- run-time system
- safety actuation system
- safety system
- scale back system
- seam tracking laser processing system
- seam-tracking system
- security system
- selective assembly system
- selective control system
- self-adapting system
- self-contained starting system
- self-contained system
- self-monitoring measuring system
- self-optimizing adaptive control system
- self-programming NC system
- self-teaching system
- self-test system
- sensing system
- sensor system
- sensor-based system
- sensory control system
- sensory feedback system
- sensory interactive system
- sensory-processing system
- sentence recognition system
- sequencing control system
- sequential control system
- series lubrication system
- service system
- servo control system
- servo drive system
- servo positioning system
- servo transducer system
- servo-controlled blade-feed-pressure system
- setting system
- SFP system
- shaft system
- shared tools system
- shopfloor communication message system
- shopfloor part-programming system
- shopfloor programming system
- shopfloor-programming control system
- short-closed oil system
- shuttle car system
- shuttle system
- shuttle-type container system
- side-loading pallet system
- sign system
- signature-analysis system
- silhouetting system
- single system
- single-board computer system
- single-cell system
- single-line lubrication system
- single-point lubrication system
- single-stage system
- single-tube system
- single-unit machining system
- single-variable system
- sinking system
- six-station pallet system
- size-monitoring system
- skidless system
- skid-type system
- small knowledge system
- small scale system
- small-batch manufacturing system
- sociotechnical system
- software-based system
- software-operating system
- solid model CAD system
- solid modeling system
- solids-based system
- sonic digitizing system
- space-monitoring sensor system
- special-purpose CNC system
- special-purpose material handling system
- speech-understanding system
- spindle airblast system
- spindle-probe system
- splash lubrication system
- split-type of tooling system
- spray lubrication system
- sprocket-chain system
- stabilization system
- stabilizing system
- stacking system
- stand-alone system
- standard control system
- standard unit system
- starting system
- statistical process control system
- steady-state system
- stepping motor drive system
- stocker system
- stocking system
- stop-bolt locking system
- storage system
- storage-and-retrieval system
- storage-retrieval system
- straight cut control system
- straight-line control system
- stress calculations infinite element system
- structurally stable system
- structurally unstable system
- stub-tooth system
- subloop system
- supervision system
- supervisory computer control system
- supervisory control system
- surface-measurement system
- surveillance system
- suspension system
- swarf conveyance system
- swarf-management system
- swarf-removal system
- switching system
- synthetic vision system
- system of dimensioning
- system of forces
- system of limits and fits
- system of quantities
- system of the machine retaining devices
- system of units
- tactile sensing system
- tailored NC system
- tailor-made system
- tape-oriented system
- target system
- teach system
- teachable-logic control system
- teaching system
- teach-mode programming system
- technology-intensive system
- telecommunication system
- telemetry gage system
- telemetry system
- teleoperated system
- telepresence system
- telerobotic system
- ten-station pallet system
- term system
- test system
- testing system
- text organizing system
- thermal control system
- thermal enclosure system
- thermal propulsion system
- thread measurement system
- thread measuring system
- three-dimensional CAM system
- three-dimensional coordinate system
- three-wire thread measuring system
- through feed system
- through-the-tool system
- time control system
- time cycle system
- time-shared system
- time-sharing NC programming system
- time-sharing system
- tool animation system
- tool breakage prevention system
- tool change system
- tool condition monitoring system
- tool coolant system
- tool deflection calibration system
- tool identification tag system
- tool life control system
- tool life management system
- tool magazine exchanger system
- tool management system
- tool position-compensating system
- tool shank cleaning system
- tool storage and transport system
- tool storage/management system
- tool-associated system
- tool-clamp system
- tool-holder-work system
- tool-ID system
- tooling AGV system
- tooling system
- tool-in-hand system
- tool-in-use system
- tool-machine system
- tool-monitoring system
- tool-mounting system
- tool-presetting system
- tool-probing system
- tool-to-turret connection system
- tool-transfer system
- torque-monitoring system
- total system
- total-loss lubrication system
- touch-probe digitizer system
- touch-probe digitizing system
- touch-probe system
- towline cart system
- towline conveyor system
- towline handling system
- towline material handling system
- towline transfer system
- tracer control system
- tracing system
- track system
- tracking/scheduling system
- track-monitoring system
- transfer system
- translating system
- transmission system
- transporter system
- traverse-metering system
- tray-type transfer system
- triangulation system
- tribomechanical system
- tri-level stocker system
- triordinate system
- trolley control system
- trouble-free control system
- T-slot system
- tuned system
- turning system
- turning-and-chucking system
- turnkey computer control system
- turnkey system
- turret probing system
- turret tooling system
- two-line lubrication system
- two-machine system
- two-pallet exchange system
- two-shift system
- two-tier inspection system
- unattended machining system
- unattended production system
- uncertain system
- unified system
- unit bore system
- unit system
- unit-build system
- unit-load automated storage and retrieval system
- unit-load system
- UNIX-based 32-bit computer system
- unmonitored control system
- unstable system
- user identification system
- user's CAD system
- V coding system
- vacuum system
- variable pallet system
- variable-coefficient system
- variable-gain ACC system
- variable-mission system
- versatile data acquisition system
- vertical carousel system
- vertical rotating warehouse system
- vibration system
- vibratory system
- video measuring system
- video-based measurement system
- viewing system
- virtual design system
- virtual storage system
- vision guidance system
- vision metrology system
- vision optical system
- vision sensor system
- vision system
- vision tool-presetting system
- vision-based inspection system
- vision-based system
- visual computing system
- visual inspection system
- VME-based system
- voice data entry system
- voice system
- voice-input system
- volume-flexible system
- volume-metric lubrication system
- voluntary standards system
- warehousing system
- warning protection system
- warning system
- wash system
- waste material treatment system
- watchdog system
- waterjet system
- way-lubrication system
- wedge-locked tool clamping system
- wheelhead-measuring system
- windowing system
- wire-cut system
- wire-frame CAD system
- wire-guided transport system
- wire-guided trolley routing system
- word recognition system
- work infeed system
- work transfer system
- work transport system
- workhandling system
- work-holding system
- workpiece-cleaning system
- workstation-oriented CNC system
- zero error position system

- adapter circuit
- adjustment circuit
- alive circuit
- announcing circuit
- anode circuit
- antisidetone circuit
- asynchronous circuit
- automatic reset-data circuit
- automatic ringdown circuit
- automatic start circuit
- auxiliary circuit
- balanced circuit
- balanced-wire circuit
- balancing circuit
- band-switching circuit
- basic circuit
- black-level restoring circuit
- black-level stretch circuit
- bootstrap circuit
- branch circuit
- branched circuit
- bridge antisidetone circuit
- building-out circuit
- built-up circuit
- Buttler circuit
- bypass circuit
- cached circuit
- call circuit
- capacitor-coupled circuit
- capacitor-switched circuit
- capacitor-switching circuit
- central-battery circuit
- chain-type connection circuit
- character generator large-scale integration circuit
- charge-coupled device circuit
- check parity circuit
- checkout circuit
- chrominance matrix circuit
- chrominance separation circuit
- chrominance takeoff circuit
- clamp-on circuit
- closed circuit
- coarse phasing circuit
- coaxial circuit
- coincidence circuit
- color-balance circuit
- color-indexing circuit
- color-purity circuit
- combinational-circuit circuit
- combined-supply circuit
- common-base circuit
- common-battery circuit
- common-collector circuit
- common-drain circuit
- common-emitter circuit
- common-gate circuit
- common-source circuit
- common-user circuit
- communication circuit
- comparing circuit
- compensating antisidetone circuit
- complemental metal-oxide-semiconductor circuit
- composite circuit
- conductor-bundled static wire circuit
- conference circuit
- connecting circuit
- constant-closed circuit
- contactor-relay circuit
- continental circuit
- convergence circuit
- cord circuit
- correcting circuit
- Costas circuit
- counter-coupling circuit
- counting-down circuit
- coupled circuit
- cross-bus matrix circuit
- crossed-waveguide circuit
- cue circuit
- cutoff circuit
- Darlingtone circuit
- data circuit
- data-transmission circuit
- dc restoration circuit
- decoder circuit
- delay circuit
- demodulation circuit
- dial-up circuit
- diamond circuit
- differencing circuit
- differential-frequency circuit
- digital circuit
- digital-excitation circuit
- digital-leased circuit
- diode-clamping circuit
- diode-clipping circuit
- diode-stabilitron circuit
- direct international circuit
- direct-connection circuit
- direct-transit international circuit
- direct-wire circuit
- double half-wave circuit
- double-ended cord circuit
- double-loop circuit
- dual circuit
- earth circuit
- earthed circuit
- echo-absorption circuit
- edge derivation circuit
- electric circuit
- electronic circuit
- elementary circuit
- encoding circuit
- energized circuit
- engineering circuit
- equivalent circuit
- error-subtracting circuit
- external circuit
- fallback circuit
- feed circuit
- feedback circuit
- fiber-optic circuit
- fire-control circuit
- fixed-virtual circuit
- flexible circuit
- flexible-stage circuit
- flywheel circuit
- forked circuit
- four-wire circuit
- frame scanning circuit
- frequency-changing circuit
- frequency-protection circuit
- full-accessible circuit
- full-period allocated circuit
- functional-switching circuit
- gallium-arsenide integrated circuit
- gating circuit
- generating circuit
- Gilbert circuit
- Grets circuit
- grid circuit
- ground-return circuit
- grouping circuit
- half-bridge circuit
- half-wave circuit
- hardened circuit
- head circuit
- HF-correction circuit
- holding circuit
- horizontal deflection circuit
- hybrid circuit
- hypothetical reference circuit
- idle lighting limiting circuit
- inclined adjustment circuit
- incoming circuit
- independent circuit
- inductive circuit
- input circuit
- input-by-output matrix circuit
- inquiry circuit
- integrated circuit
- integrating circuit
- interchange circuit
- interface-integrated circuit
- interferenced circuit
- interferencing circuit
- international leased circuit
- interstage coupling circuit
- invertor circuit
- ISDN echo cancellation circuit
- isochronic circuit
- Jiakoletto circuit
- junction circuit
- Karp circuit
- keep-alive circuit
- key section power circuit
- killer circuit
- ladder circuit
- lamp circuit
- large-scale integration circuit
- latched circuit
- LCR circuit
- lead changeover circuit
- LF-correction circuit
- line circuit
- linear circuit
- link circuit
- live circuit
- local circuit
- lock-in circuit
- locking circuit
- lock-out circuit
- long circuit
- long-distance circuit
- longitudinal circuit
- loop circuit
- lossless resonant circuit
- L-shaped circuit
- magnetic convergence circuit
- main supply circuit
- make circuit
- Marx circuit
- match circuit
- matching circuit
- matrix circuit
- message circuit
- microelectronic circuit
- microphone supply circuit
- multidrop circuit
- multijunctor circuit
- multiloop circuit
- multipoint circuit
- muting circuit
- neodymium magnetic circuit
- neutral circuit
- neutralization circuit
- neutralizing circuit
- noise-rejecting circuit
- noise-suicide circuit
- nonlinear circuit
- NOT circuit
- on-call circuit
- open circuit
- optoelectronic integrated circuit
- OR circuit
- order wire circuits
- OR-ELSE circuit
- oscillating circuit
- oscillation circuit
- output circuit
- output voltage tracking circuit
- packaged circuit
- paging circuit
- parallel circuit
- partially accessible circuit
- peaking circuit
- periodic closed circuit
- phantom circuit
- phase comparating circuit
- phase compensating circuit
- phase-shift circuit
- phase-substitution circuit
- physical circuit
- pilot circuit
- pilot-make-busy circuit
- planar circuit
- point-to-point circuit
- polling circuit
- polyphase circuit
- power circuit
- power-supply circuit
- precision phasing circuit
- primary circuit
- printed circuit
- private leased circuit
- protection circuit
- pulse-phase control circuit
- push-to-talk circuit
- push-to-type circuit
- quenching circuit
- quiet-tuning circuit
- radial supply circuit
- radio circuit
- RC circuit
- reactance control circuit
- reading circuit
- rectification circuit
- reference circuit
- rejecting circuit
- relay cutout circuit
- remote control circuit
- remote-ring circuit
- repeat circuit
- reset circuit
- resonance circuit
- resonant circuit
- reverse circuit
- reverse diode circuit
- ring circuit
- ringing circuit
- sample-and-hold circuit
- scaling circuit
- Scott circuit
- secondary circuit
- section substitution circuit
- selecting circuit
- selective circuit
- self-locked circuit
- series circuit
- series-oscillating circuit
- series-parallel circuit
- series-peaking circuit
- series-tuned circuit
- shaping circuit
- shaved single frequency circuit
- short circuit
- shunt circuit
- shunting circuit
- shunt-peaking circuit
- side circuit
- signal circuit
- signal processing circuit
- signal recovery circuit
- single-current circuit
- single-ended push-pull circuit
- single-frequency resonance circuit
- single-phase bridge circuit
- single-phase circuit
- snap-acting circuit
- solving circuit
- sound-program circuit
- spark-safe circuit
- speech circuit
- speed regulating circuit
- squaring circuit
- stabilizer circuit
- stable circuit
- stage circuit
- stage control circuit
- standard cable circuit
- standard circuit
- standby circuit
- stenode circuit
- storage large-scale integration circuit
- storage locking circuit
- straightforward circuit
- strap magnetic circuit
- strip-line circuit
- super large scale integration circuit
- superimposed circuit
- superposed circuit
- supply circuit
- sweep circuit
- switched circuit
- switching circuit
- symistor control circuit
- synchronous circuit
- tail circuit
- talk-back circuit
- tandem data circuit
- tank circuit
- tapped magnetic circuit
- tapped stage circuit
- telecommunication circuit
- telecommunication-protection circuit
- telegraph circuit
- telegraph grade circuit
- telegraph signal generating circuit
- telephone circuit
- telephone signal generating circuit
- telesignaling receiving circuit
- telesignaling sending circuit
- television circuit
- terminal circuit
- test circuit
- testing circuit
- third circuit
- three-loop circuit
- three-phase input circuit
- three-wire circuit
- through circuit
- thyristor control circuit
- time protection circuit
- time-delay circuit
- time-interval protection circuit
- time-setting circuit
- timing circuit
- toll circuit
- touch sensing circuit
- touch tone dial circuit
- transformer substitution circuit
- transformer-coupled circuit
- transistor clipping circuit
- transistor collector circuit
- transistor control circuit
- transistor protection circuit
- tributary circuit
- triode clamp circuit
- trunk circuit
- T-shaped circuit
- tuned circuit
- twelve-pulse circuit
- two-frequency resonance circuit
- two-loop circuit
- two-wire-ground circuit
- uniform circuit
- unstable circuit
- untapped circuit
- untapped magnetic circuit
- U-shaped circuit
- variometer controlling circuit
- video circuit
- virtual circuit
- voice circuit
- voltage multiplying circuit
- voltage sensor circuit
- watching output circuit
- wideband circuit
- wire circuit
- wired circuit

- acoustic alarm system
- acoustic image system
- acoustic systems
- actiontrack system
- active IR-system
- actuator system
- adaptive communication system
- adaptive teleinformation system
- adaptive telemetering system
- advanced information system
- Afsatcom system
- air system
- aircraft intercommunication system
- airfield communication system
- air-ground automatic system
- airline reservation system
- air-to-ground TV system
- alarm signal system
- alarm system
- all-channel signaling system
- ALL-IN-ONE system
- alphanumeric system
- amplified speaker system
- amplitude shift-keying system
- AMPS system
- analog cellular communication system
- analog cellular system
- analog component video system
- analog television system
- analog tropospheric system
- anisochronous system
- antenna system
- antitheft system
- AR system
- Arabsat system
- ASK system
- associated channel analog system
- asynchronous address communication system
- audio recording system
- Aurora system
- Aussat system
- automatic communication system
- automatic connection establishment system
- automatic control system
- automatic data acquisition system
- automatic telegraphy system
- automatic telephone system
- automatic tuning system
- automatized cellular system
- auxiliary alarm system
- balanced cable transmission system
- band sharing system
- base station system
- baseband system
- basic input/output system
- bass-reflex speaker system
- batch processing system
- batch transmission system
- batch-and-forward system
- batteryless system
- bilateral CTV system
- binary tariff system
- biocontrol system
- bit parallel interface system
- bit transport system
- bridge duplex system
- broadband mobile system
- broadcast satellite system
- broadcasting delivery media systems
- burglar alarm system
- byte-serial interface system
- cabinet system
- cabinetless system
- cable distribution system
- cable TV system
- call-accounting system
- call-answering system
- call-counting system
- call-distributing system
- call-processing system
- call-queueing system
- camp-on system
- CAPTAIN system
- car component audio system
- carrier reinsertion system
- carrier system
- carrier-communication system
- carrier-current communication system
- Cassegrain-Schmidt system
- cassette recording system
- cassette reproducing system
- CATRIN system
- caution system
- CD 900 system
- cellular system
- cellular-radio system
- central-battery system
- centralized control system
- chirp binary telegraph system
- cipher system
- circuit switched telecommunication system
- circuit switching telecommunication system
- circular telecontrol system
- clock system
- closed-circuit communication system
- closed-circuit telegraph system
- closed-numbering system
- code-dependent system
- code-division multiple access system
- code-independent system
- code-insensitive system
- code-sensitive system
- coding system
- coherent fiber-optic system
- collimating system
- collocated system
- color separating system
- combined numbering system
- combined power supply system
- combined satellite communication system
- common-battery system
- common-carrier system
- common-channel signaling system
- common-engineering communication system
- common-purpose cellular system
- common-using band system
- common-using cordless telephone system
- common-using paging system
- communication system
- communication traffic system
- communications system
- community antenna system
- community antenna television system
- community TV-system
- commununication switching system
- compact disk digital audio system
- compatible color television system
- compatible single sideband system
- compatible single-band system
- compatible TV-system
- complex radio communication system
- computer vision system
- computer-telephone system
- Comsar system
- Comsat system
- Conax system
- concentrated-insonation system
- conference system
- conference-communication system
- congested system
- congress-class system
- constant-current system
- control generating system
- conventional television system
- Conversant system
- cordless-communication system
- crossbar system
- crossed-coincident microphone system
- Crosspoint system
- CSE system
- C-system
- cubical video projecting system
- data processing system
- data system
- data transport system
- data-collection system
- data-compression system
- data-exchange system
- dataflow system
- data-gathering system
- data-handling system
- data-measuring system
- data-reduction system
- data-transmission system
- Decca Navigator system
- DECfax system
- decision-feedback system
- dedicated control channel system
- dedicated multimedia system
- delta-sigma system
- deluxe presentation system
- departmental communication system
- desktop-video system
- DFS/Copernicus system
- dial-telephone system
- differential phase shift-keying system
- differential-duplex system
- differential-magnetic system
- digital camera system
- digital hybrid-key telephone system
- digital mass storage system
- digital microwave radio transmission system
- digital telephone communication system
- digital transmission system
- digital TV-communication system
- Digital UNIX system
- digital-analog system
- digital-cellular system
- digital-data modulation system
- digital-effect system
- digital-message entry system
- digital-termination system
- direct-broadcasting satellite system
- directing system
- direct-modulation system
- direct-sequence system
- direct-telephone communication system
- discrete communication system
- discrete sound system
- discrete-addressing system
- disk-operating system
- DISOSS system
- dispatch telephone communication system
- dispatch-center system
- dispersed-insonation system
- distributed-insonation system
- distributed-processing system
- documental-type communication system
- Dolby systems
- domestic satellite communication system
- double-band telephone communication system
- double-channel transmission system
- double-current transmission system
- double-pole communication system
- double-sideband large carrier system
- DSCS system
- D-system
- dual-cable system
- dual-reflector system
- duplexed system
- Earth-to-space transmission system
- ECM system
- electric communication system
- electronic antishock system
- electronic data-gathering system
- electronic data-processing system
- electronic-message system
- electronic-scanning system
- electronic-switching system
- Ellipso system
- emergency telephone communication system
- emergency-broadcast system
- EMX system
- equidistant system
- error-correction system
- error-detection system
- Eutelsat system
- extensible system
- external paging system
- facsimile system
- fast-acting servicing system
- fault-tolerant system
- fax communication system
- fax transmitting system
- feed system
- fiber transmission system
- fiber-optic transmission system
- field-sequential system
- final mile system
- finishing system
- fire alarm system
- fire warning system
- first generation cellular system
- five-channel communication system
- fixed satellite system
- Flexcam system
- flexible access system
- Flitsatcom system
- focusing system
- four-channel sound system
- four-dimensional system
- four-wire telephone communication system
- frame-sequential system
- frequency shift-keying system
- frequency-carrier system
- frequency-control system
- front-bass reflex speaker system
- fully digital system
- gate system
- Gaussian system
- generalized system
- generating dynamic system
- generator-dc-motor system
- GIGASET radio system
- global positioning system
- Global system
- Gopher system
- grandfathered system
- group-alerting and dispatching system
- guide system
- hard-wired CCTV system
- hazard system
- helical-scan system
- HF-synchronizing system
- high-precision navigating system
- Hi-linear system
- home system
- home-telephone system
- home-type system
- homing-guidance system
- host system
- hydroacoustic system
- ideal communication system
- idealized system
- image informaion system
- image-forming system
- immedial servicing system
- incompatible system
- independent system
- information retrieval system
- information system radio system
- information system
- information-feedback system
- information-measuring system
- infrared alarm system
- Inmarsat system
- Inmarsat-A system
- Inmarsat-B system
- Inmarsat-C system
- Inmarsat-D system
- Inmarsat-M system
- Inmarsat-P system
- integrated telephone system
- integrated videographic teleconferencing system
- integrated-antenna system
- integrated-communication system
- integrated-modulation system
- integrated-office system
- Intelsat system
- interactive system
- intercarrier-sound system
- intercommunication system
- intercontinental tropospheric system
- interlock system
- intermachine exchange system
- intermediate system
- international communication system
- interphone system
- Intervision system
- intraband signaling system
- intruder alarm system
- inward-outward dialing system
- ionoscatter system
- ionosphere sounder system
- ionospheric system
- Iridium system
- isolated system
- Italsat system
- J-carrier system
- joint-multichannel trunking and switching system
- K-carrier system
- key system
- key-telephone system
- land satellite communication system
- large-grained communication system
- laser communication system
- L-band satellite system
- L-carrier system
- Leasat system
- lightning protection system
- limited distortion system
- line amplifiers system
- link system
- little-channel relay system
- local alarm system
- local battery system
- local communication system
- local radio paging system
- long-haul system
- long-range system
- loop system
- loud-speaking communication system
- low-traffic system
- magnetic tape recording system
- Mail system
- management-information system
- manual cellular system system
- manual telephone set system
- Marisat system
- master television system
- master-antenna television system
- matrix sound system
- message feedback system
- message procession system
- message registration system
- message-switched system
- meteor radio system
- Metrobus system
- micro component system
- Micro Press Cluster Printing system
- micro-lens system
- microprocessor system
- microwave relay system
- midi system
- mine radio telephone system
- mini system
- mixed media system
- mixed numbering system
- mobile cellular communication system
- mobile land communication system
- mobile radio system
- mobile relay system
- mobile system
- modulated system
- monetary mobile system
- MS-Mail system
- multiareal system
- multicassette system
- multichannel telephone system
- multicomputer system
- multidisk system
- multiformat recording system
- multifrequency tone signaling system
- multiguard system
- multilevel mixed system
- multimedia system
- multiple-channel system
- multiqueue system
- Multiscrypt system
- multistandard system
- multitrack editing system
- mutibeam antenna system
- muting system
- Nagravision system
- NAMTS system
- narrow-angle TV system
- national communication system
- navigation system
- n-channel communication system
- n-channel DPSK system
- n-channel transmission system
- network standalone system
- network system
- network-operation system
- networks numbering system
- neutral direct-current telegraph system
- n-head video system
- NMT system
- noise-reduction system
- nonhoming tuning system
- noninterlaced television system
- nonsegmented system
- Norsat system
- n-satellite system system
- n-tone DPSK system
- n-tone MFSK system
- NTSC system
- NTT system
- obligatory message system
- Odyssey system
- off-line system
- on-line computer system
- on-line secured system
- open numbering system
- open system
- operative-engineering communication system
- opposite signals system
- optical-communication system
- optical-information system
- optical-projection system
- optoelectronic system
- oscillating system
- oscillation system
- outband signaling system
- package-and-resource tracking system
- pagemaster system
- paging system
- PAL system
- parametric system
- PATHWORKS system
- pattern recognition system
- personal holding guard system
- phase shift-keying system
- phone system
- Piccolo system
- pilot-controller system
- polar direct-current telegraph system
- portable mobile system
- power control system
- power controlling system
- power-line carrier system
- power-supply system
- press-to-talk system
- Prestel system
- primary-supply system
- privacy system
- private branch paging system
- private movable system
- private videodata system
- private videotex system
- process-interface system
- PROFS system
- programmable cross-connect system
- programmable cross-connected system
- programmed radio system
- prompting system
- protected wireline distribution system
- protection system
- pseudoquadraphony system
- pseudotrunking system
- public videodata system
- public videotex system
- pulse-code system
- pulse-frequency system
- pulse-time system
- quadraphonic sound system
- quadruple-diversity system
- R1 system
- R2 system
- radio buoy system
- radio command system
- radio communication system
- Radio Data system
- radio facsimile system
- Radiocom 2000 system
- radio-control system
- radio-paging system
- radio-relay system
- radiosonde-radio-wind system
- radio-telemetering system
- real time pulse-echo system
- real time system
- receiver lockout system
- recording system
- recovery system
- redundant system
- reference-information system
- regional electronic payment system
- relay-radio system
- remote concentrating system
- remote control system
- remote diagnostic system
- remote information system
- remote semiconcentrating system
- remote sensing system
- remote signaling system
- rendering system
- rerecording system
- reserved servicing system
- RF/Transmission system
- rotary system
- safety alarm system
- safety system
- Satcom system
- satellite comminication system
- satellite marine comminication system
- Satellite Master Antenna Television system
- satellite radio system
- satellite-aircraft communication system
- SB-communication system
- SBL communication system
- scalable system
- scanning trunking system
- SCO UNIX system
- searchless identification system
- seat reservation system
- SECAM system
- second generation cellular system
- second room system
- secondary supply system
- secrecy system
- section communication system
- security system
- segmented system
- seismic system
- selective calling system
- selective frequency base station system
- selective protective system
- selective telephone system
- self-adjusting system
- self-balancing differential system
- self-contained system
- self-test system
- selsyn system
- semiautomatic-switching system
- semiautomatized cellular system
- sensory system
- servo system
- shadow-batch system
- short-haul microwave system
- Sicral system
- Sigma Servo system
- signal system
- simplex movable system
- single-band transmission system
- single-busbar system
- single-cable communication system
- single-cable system
- single-channel system
- single-current transmission system
- single-pulse tracking system
- Skynet system
- small-grained communication system
- SmarTrunk II radio communication system
- solid-state uninterruptible power battery system
- Sony bus system
- sound alarm system
- sound equalization system
- sound navigation system
- sound reinforcement system
- sound warning system
- space-division system
- space-switched system
- spark-safe system
- speaker system
- special communication system
- speech-processing system
- speech-recognition system
- split-speaker system
- spread-spectrum system
- stabilizing system
- stage monitoring system
- standalone double point system
- star-circuit system
- STAREX CMX system
- starting communication system
- start-stop system
- stationary satellite system
- step-by-step system
- stereo sound system
- stereophonic sound system
- storage system
- storage-and-retrieval system
- Strowger system
- submarine fiber-optic system
- subprimary digital transmission system
- subscriber carrier system
- subscriber switching system
- suffix system
- Supersat system
- supervisory control system
- surround sound system
- switched telecommunication system
- switching system
- sync communication system
- synchro system
- synchronous communication system
- synchronous digital system
- TAGS system
- tandem system
- tariffication system
- T-carrier system
- TDF system
- teleautomatic system
- Telecom system
- telecommunication system
- telecommunications system
- telecommunication-service priority system
- telecommunications-service priority system
- telecontrol system
- telemechanic system
- telemetering system
- telemetry system
- telephone system
- telephone-answering system
- telephone-communication system
- telephone-communications system
- teleprocessing system
- Telesat system
- teletex system
- teletypewriter system
- television-telephone system
- Tele-X system
- Telsar system
- terminal system
- terrestrial radio-relay system
- theft-prevention system
- thin-route system
- third generation communication system
- three-axle stabilizing system
- three-channel HF-telephone system
- three-channel transmission system
- three-color system
- three-lens optical system
- three-primary system
- three-wire system
- time-dissemination system
- time-frequency hopping system
- time-switched system
- total access communication system
- total area coverage system
- transmission system
- trichromatic system
- triple-interlace system
- triplex system
- trunk communication system
- TV-observation system
- twelve-channel transmission system
- two-arm system
- two-band system
- two-color system
- two-roller transfer system
- two-step control system
- two-way CATV system
- two-way system
- two-wire telephone communication system
- ultra-match system
- ULTRIX system
- unified radioaccess system
- unilateral-control system
- unilateral-synchronization system
- uninterruptible-power system
- Unisat system
- universal alarm system
- universal-battery system
- universal-electronic system
- universal-movable system
- Uniworks system
- vestigial-sideband system
- video editing system
- video home system
- video recording system
- videocom system
- videoteleconference system
- videotex system
- virtual studio system
- vision system
- vocoder system
- voice dialog system
- voice frequency carrier telegraph system
- voice modulation system
- voice post system
- volume control system
- waiting system
- warning system
- watch system
- watching system
- waterside facsimile communication system
- wave-propagating system
- wide-angle TV system
- Winfax Pro system
- wired broadcasting system
- wireless CCTV system
- wireless home system
- wireless infrared speaker system
- wire-radio communication system
- XY system
- zone-selective protection system
- zoning system