protection of data in transit

- acoustic imaging device
- active device
- add-in device
- adjusting device
- airplane speaking device
- airplane tape recording device
- alarm device
- all-in-one device
- amplifying device
- analyzing device
- ancillary device
- announcer's device
- answering device
- antenna-feeder device
- antenna-matching device
- antipumping device
- arithmetic device
- arresting device
- attention device
- audible signal device
- automatic program input device
- automatic voice-alert device
- automatic-matching device
- auxiliary call-doubling device
- auxiliary loud-speaking device
- auxiliary radio communication device
- balancing device
- beam-processing device
- buffer device
- burglar-alarm device
- cable device
- calling device
- call-routing device
- central chain data device
- central-control device
- central-intranetwork device
- channel device
- channel-adjusting device
- charge-injection device
- clamping device
- color-imaging device
- combinational device
- combined safety-alarm device
- combined-measuring device
- command-execution device
- command-transit device
- command-transmission device
- compact device
- composite-optoelectronic device
- conditional-access device
- conditioning device
- connecting device
- connection device
- contact-switching device
- control device
- control-calling device
- controlled semiconductor device
- controller device
- counting device
- damping device
- data collection device
- data transmission device
- data-input device
- data-interface device
- data-recording device
- decoding device
- digital device
- digital signal processing device
- discrete control device
- dispatch device
- display device
- doubling device
- dual-tone ringing device
- duplex amplifier bypass device
- duty-reception device
- earthing device
- eavesdropping device
- edge device
- electrodynamical device
- electromagnetic device
- electronic device
- electronic-listening device
- electronic-relay device
- electronic-telegraph device
- electrostatic device
- emergency control device
- error-protecting device
- executive device
- facsimile device
- fast acting device
- fast action device
- fax machine memory device
- ferrite device
- ferrodynamical device
- ferrostatic device
- fiber-optic branching device
- fiber-optic interconnection device
- film optical-sensing device
- filter-matching device
- focusing device
- four-layer device
- four-terminal device
- frequency converting device
- frequency encoding device
- frequency-selective device
- full four-terminal device
- functional device
- gas-discharge device
- groove locating device
- heat device
- IC device
- image-display device
- imaging device
- independent device
- independent-calling device
- independent-telegraph device
- indicating device
- indicator device
- induction device
- in-line device
- input device
- input/output device
- input-isolating device
- input-output device
- input-protector device
- interface device
- interlocking device
- intermediate device
- isotropic device
- laser receiving device
- laser transmitting device
- level control device
- light alarm device
- light-sensitive device
- line HF-device
- linear device
- linear four-terminal device
- line-mounting device
- load device
- locking device
- lockout-signaling device
- logical device
- low-noise start-control device
- low-noise start-controlling device
- low-voltage device
- magnetic device
- magnetic tape sound recording device
- magnetic-wave device
- magnetoelectric device
- magnetoelectronic sparkproof device
- master device
- matching device
- measuring device
- mechanical switching device
- memory device
- message broadcasting device
- metering device
- microelectronic device
- microphone switching device
- mobile speaking device
- modem encryption device
- motor synchronizing device
- multicommunications device
- multifunction device
- multirange measuring device
- n-color device
- network section checkout device
- network synchronizing device
- noncontrolled semiconductor device
- nonlinear four-terminal device
- numbered data requiring and receiving device
- on-off device
- optical-to-optical interface device
- optimal receiving device
- optoelectronic device
- output device
- partial four-terminal device
- partially-controlled semiconductor device
- passive device
- peripheral control device
- peripheral device
- persistent-image device
- phase sensitivity protecting device
- phase shifting device
- photoconductive device
- photoelectric device
- photoemissive device
- photogalvanic device
- photosensitive device
- photothyristor electronic device
- planar device
- polarized device
- power supply device
- primary signal device
- printing device
- protection device
- protective cutout device
- pulse distributing device
- pulse firing device
- pulse semiconductor device
- pulse shortening device
- radio broadcasting device
- radioelectronic device
- real device
- receiving device
- recognition device
- recovering device
- regulating device
- release device
- remote alarm device
- remote control device
- remote network tripping device
- remote positioning device
- remote signaling device
- reserve switching device
- restricted radiation device
- ringing device
- rotary device
- routing device
- safety device
- safety-alarm device
- scanning device
- sealed distribution device
- selective call device
- semiconductor device
- semiconductor switching device
- sensing device
- signal transducing device
- signaling control device
- signaling device
- silicon imaging device
- single chip alarm device
- sizing device
- slave device
- solid optoelectronic device
- spark-protecting device
- spark-safe testing device
- speaking device
- special phototelegraph device
- spectrum transfer device
- start-control device
- start-controlling device
- starter-controlled device
- static protection device
- station HF-device
- stationary station automatic selection device
- stationary-electrical device
- storage device
- strobing device
- subscriber distribution device
- supporting device
- suppression device
- surface acoustic wave device
- surface communication device
- switching device
- sync device
- synthesized-radio device
- tap changing device
- tapping device
- tariff device
- telecontrol device
- teledata transmission device
- telegram format conversion device
- telemetric transmission device
- telephone device
- telephone periphery device
- telering device
- teletex device
- terminal device
- terminal telegraph device
- test device
- thermal regulation device
- three-terminal device
- threshold device
- time-delay device
- timing device
- touch-input device
- transceiving diving device
- transcient telegraph device
- transit device
- transmitter connecting device
- transmitting device
- trunk-encryption device
- two-terminal device
- ultrasonic imaging device
- universal calling device
- universal telegraph device
- videotex device
- voice-control device
- voice-operated gain-adjusting device
- voltage-sensing device
- warning device
- wire speaking device
- wireless speaking device

- 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

- λ-shaped negative-resistance device
- absolute pointing device
- absolute value device
- accumulation-mode charge-coupled device
- acoustic correlation device
- acoustic delay device
- acoustic imaging device
- acoustic-surface-wave device
- acoustic-surface-wave interaction charge-coupled device
- acoustic-volume-wave device
- acoustic-wave device
- acoustooptic device
- acoustoresistive device
- active device
- active medium propagation device
- adaptive device
- add-on device
- all-junction device
- aluminum-gate MOS device
- amorphous semiconductor memory device
- amorphous semiconductor switching device
- analog device
- answer device
- antihunt device
- anti-inrush device
- antijamming device
- anti-pumping device
- antisidetone device
- antistatic device
- antistrike device
- AO device
- arc-control device
- array device
- attached device
- attention device
- audible signal device
- audio device
- audio-response device
- augmentative device
- autocorrelation device
- automatic holding device
- automatic-alarm-signal keying device
- avalanche device
- avalanche-effect device
- backup device
- band-compression device
- beam-expanding device
- beam-lead device
- beam-manipulating device
- beam-narrowing device
- beam-transforming device
- bidirectional device
- bipolar device
- bistable device
- bistable optical device
- block device
- BlueTooth device
- bogey electron device
- bubble device
- bubble domain device
- bubble lattice storage device
- bubble memory device
- bucket-brigade charge-coupled device
- bucket-brigade device
- built-in pointing device
- bulk channel charge-coupled device
- bulk-acoustic-wave device
- bulk-charge-coupled device
- bulk-effect device
- bulk-property device
- bulk-type acoustooptic device
- bunching device
- buried channel charge-coupled device
- burst device
- bus-powered device
- callback port protection device
- calling device
- carrier-operated antinoise device
- cascade charge-coupled device
- cascaded thermoelectric device
- center-bonded device
- CFAR device
- character device
- charge-control device
- charge-coupled device
- charge-coupled imaging device
- charge-coupled line imaging device
- charge-coupled storage device
- charge-injection device
- charge-injection imaging device
- charge-transfer device
- charge-trapping device
- chip device
- chip-and-wire device
- clip-on pointing device
- clustered devices
- CMOS device
- coder device
- coherent electroluminescence device
- color imaging device
- COM device
- complex programmable logic device
- compound device
- computer output microfilm device
- conductively connected charge-coupled device
- constant false-alarm ratio device
- consumer device
- contiguous-disk bubble domain device
- controlled avalanche device
- controlled-surface device
- correlation device
- countermeasure devices
- coupling device
- cross-correlation device
- cross-field device
- cryogenic device
- current-access magnetic bubble device
- current-controlled device
- current-controlled differential-negative-resistance device
- current-controlled DNR device
- current-mode logic device
- current-operated device
- custom device
- data entry device
- data preparation device
- data recording device
- deception devices
- decision-making device
- decoding device
- dedicated device
- deformable-mirror device
- DEFT device
- delay device
- dense device
- depletion-mode device
- detecting device
- DI device
- dielectric isolation device
- diffused device
- digit delay device
- digital device
- digital micromirror device
- diode-array imaging device
- direct electronic Fourier transform device
- direct-access storage device
- direct-view device
- direct-viewing device
- discrete device
- disk device
- display device
- distributed diode device
- distributed interaction device
- division device
- D-MOS device
- domain propagation device
- domain-tip device
- double-negative-resistance-device
- double-quantum stimulated-emission device
- dynamically configurable device
- eavesdropping device
- E-beam fabricated device
- EBS device
- edge-bonded device
- EL device
- elastooptic device
- electrically programmable logic device
- electroluminescence device
- electromagnetic device
- electron device
- electron-beam semiconductor device
- electronic device
- electronic imaging device
- electron-optical device
- electrooptical device
- elementary MOS device
- embedded device
- encoding device
- end device
- energy conversion device
- enhancement-mode device
- epiplanar device
- epitaxial-device
- error-sensing device
- exchange-coupled thin-film memory device
- external control device
- false-echo devices
- Faraday-rotation device
- fast-discharge device
- ferrite device
- ferroelectric device
- FET device
- fiber-laser device
- field-access memory device
- field-effect device
- field-effect transistor device
- field-emission device
- field-programmable interconnect device
- file device
- file-protection device
- fixed tap-weight bucket-brigade device
- floating-gate device
- fluidic-device
- follow-up device
- four-layer device
- four-terminal device
- Frame Relay access device
- free-electron device
- freestanding pointing device
- FS device
- full-speed device
- functional device
- galvanomagnetic device
- galvanomagnetic semiconductor device
- gate-array device
- graphic input device
- graphic output device
- gripping device
- groove locating device
- guided-wave acoustooptic device
- guided-wave AO Bragg device
- Gunn device
- Gunn-effect device
- gyromagnetic device
- Hall device
- Hall-effect device
- harbor echo ranging and listening device
- head-cleaning device
- heteroepitaxial device
- heterojunction device
- high-technology device
- high-threshold device
- homing device
- hot-electron device
- human interface device
- hybrid ferromagnet-semiconductor device
- hybrid integrated-circuit device
- hybrid-type device
- I/O device
- identification device
- image-storage device
- imaging device
- implanted device
- incidental radiation device
- industrial data collection device
- infrared charge-coupled device
- input device
- input-output device
- insulated-gate device
- integrated electron device
- integrated injection device
- integrated optic device
- integrating device
- interface device
- interlocking device
- ion-implantation device
- ion-implanted bubble device
- ion-injection electrostatic plasma confinement device
- jelly-bean device
- Josephson device
- Josephson-effect device
- junction device
- junction-gate device
- keying device
- known-good device
- large-area p-n junction device
- laser annealing device
- laser device
- laser welding device
- laser-beam machining device
- leaded device
- leadless device
- left ventricular assist device
- light-detecting device
- light-emitting device
- linear beam device
- linear imaging device
- locked dynamically configurable device
- logic device
- long-channel device
- low-speed device
- low-threshold device
- LS device
- magnetic bubble device
- magnetic detecting device
- magnetic device
- magnetic flux quantum device
- magnetic tunnel junction memory device
- magnetic-wave device
- magnetoelastic-wave device
- magnetoelectronic device
- magnetooptic bubble-domain device
- magnetostatic-wave device
- magnetostrictive device
- magnetotunneling device
- majority-carrier device
- make-and-break device
- manipulating device
- marginal device
- maser device
- matching device
- measurement device
- mechanical switching device
- memory device
- MEMS device
- MEMS-based device
- metal-gate device
- metal-insulator-metal device
- metal-insulator-piezoelectric semiconductor device
- metal-oxide-silicon device
- metal-semiconductor device
- microcomputer device
- microdiscrete device
- microelectromechanical system device
- microelectromechanical system-based device
- microelectronic device
- microfluidic device
- MIDI device
- minority-carrier device
- MIPS device
- MIS device
- MNOS device
- molecule-sized device
- MOS color imaging device
- MOS device
- MOS memory device
- MSW device
- M-type device
- multiaperture device
- multijunction device
- multilayered memory device
- multilevel storage device
- multiple-tap bucket-brigade device
- multiple-unit semiconductor device
- multiport device
- multistable device
- multiterminal device
- n-channel device
- negation device
- negative-resistance device
- night viewing device
- n-n heterojunction device
- noise-rejection device
- nonburst device
- noninverting parametric device
- nonreciprocal field-displacement device
- n-p-n device
- n-terminal device
- one-port device
- open-collector device
- optically coupled device
- optically pumped device
- optoelectronic device
- O-type device
- output device
- overlay device
- oxide-passivated device
- P&P device
- parallel device
- parametric device
- passivated device
- passive device
- pattern recognition device
- p-channel device
- p-channel MOS device
- periodic permanent magnet focusing device
- persistent current device
- persistent-image device
- personal communication device
- photoconducting device
- photoelectric device
- photoemissive device
- photosensitive device
- photovoltaic device
- picking device
- piezoelectric device
- piezomagnetic device
- planar device
- planar-doped barrier device
- plasma device
- plasma-coupled semiconductor device
- plotting device
- plug-and-play device
- plug-in device
- PMOS device
- p-n junction device
- PnP device
- p-n-p device
- p-n-p-n device
- point-contact superconducting device
- pointing device
- polysilicon charge-coupled device
- port protection device
- p-p heterojunction device
- PPM focusing device
- programmable device
- programmable logic device
- protective device
- punch-through device
- pyroelectric thermal imaging device
- quantum-dot resonant tunneling device
- quasioptical device
- quenched domain mode device
- radiation-measuring device
- random-access device
- rapid single flux quantum device
- readout device
- reciprocal device
- recognition device
- rectifying device
- regulating device
- relative pointing device
- restricted radiation device
- reverberation device
- ringing device
- robot control device
- rotating-field bubble device
- rotating-field bubble domain device
- RSFQ device
- safety device
- SAW device
- Schottky barrier semiconductor device
- Schottky device
- Schottky-barrier-gate Gunn-effect digital device
- SCSI device
- security device
- self-powered device
- self-reacting device
- self-synchronous device
- semiconductor device
- semiconductor switching device
- semiconductor-magnetic device
- sensing device
- serial device
- shallow-base device
- short-channel device
- short-circuit-stable device
- silicon imaging device
- silicon-gate MOS memory device
- silicon-on-insulating substrate device
- single-junction device
- single-tap bucket-brigade device
- single-unit semiconductor device
- slot device
- snap-on pointing device
- solid-state device
- SOS device
- sound-absorbing device
- spark-quenching device
- speech recognition device
- spin-wave device
- square-law device
- starting device
- static discharge device
- storage device
- storage display device
- storage-charge device
- stream device
- stream-oriented device
- stroke input device
- superconducting device
- superconducting quantum device
- superconducting quantum interference device
- surface acoustic-wave device
- surface charge-transfer device
- surface mount device
- surface-controlled device
- switching device
- symbolic device
- tape device
- tape-moving device
- TE device
- tensoelectric device
- terminal device
- thermoelectric cooling device
- thermoelectric device
- thermoelectric heating device
- thick-film device
- thin-film device
- Tokamak device
- transferred-electron device
- transferred-electron microwave device
- transit-time device
- traveling magnetic domain memory device
- traveling-wave Gunn effect device
- trip-free mechanical switching device
- tse device
- tube device
- tunnel device
- tunnel emission device
- twisted nematic device
- two-junction bipolar device
- two-port device
- two-terminal device
- ULA device
- uncommitted logic array device
- unidirectional device
- unilateral device
- unpacked device
- vacuum tunnel device
- variable grating mode device
- variable inductance cryogenic device
- vertical junction device
- VGM device
- V-groove MOS device
- virtual device
- visual signal device
- VMOS device
- V-MOS device
- voice-operated device
- voice-operated gain-adjusting device
- voltage-controlled device
- voltage-controlled differential-negative-resistance device
- voltage-controlled DNR device
- voltage-operated device
- wafer printing device
- wireless device
- X-ray detecting device
- YIG device

- accumulator unit
- actuating unit
- addressing unit
- analog processing unit
- analytic unit
- answerback unit
- answering unit
- antitheft unit
- astronomical unit
- attached unit
- audio response unit
- auto setup unit
- automatic calling unit
- automatic control unit
- automatic network unit
- automatic-dialing unit
- auxiliary memory unit
- auxiliary servicing unit
- bad unit
- balancing unit
- base unit
- basic transmission unit
- bistable unit
- break-contact unit
- built-in heat protecting unit
- burglar-alarm unit
- calibration unit
- calling devices unit
- calling unit
- camera select unit
- camera-channel unit
- camera-control unit
- capacitor unit
- channel service unit
- charging unit
- clocking unit
- command network unit
- command protocol data unit
- communication control unit
- converter unit
- crosstalk unit
- data interface unit
- data transit unit
- data-handling unit
- dc control unit
- decoupling unit
- delay unit
- device control unit
- dial-backup unit
- dialing unit
- digital processing unit
- electronic control unit
- electronic relay unit
- electrostatic units
- exchange-line unit
- exchange-supply unit
- expedited-data unit
- fast-operating unit
- fast-operation unit
- feeding unit
- file-storage unit
- filter unit
- flyaway unit
- frequency conversion unit
- frequency lock-in unit
- frequency selection unit
- Gaussian units
- generator unit
- heat-control unit
- incoming local unit
- incoming toll unit
- incoming-line unit
- independent supply unit
- independent synchronizing unit
- indicator unit
- information unit
- input unit
- integrator unit
- internal unit
- internetworking unit
- junction line unit
- key-telephone unit
- lighting load monitoring unit
- line-connection unit
- lobe-attaching unit
- local unit
- locomotive radio components supply unit
- lone-signal unit
- loudness unit
- magnetic-tape unit
- main control unit
- main fax unit
- main memory unit
- mains synchronizing unit
- matching unit
- media interface unit
- medium attachment unit
- memory unit
- message recording unit
- microprocessor unit
- mine communication supply unit
- modular unit
- motor amplifier unit
- multipath unit
- multiprocessor unit
- multisection switching unit
- network terminating unit
- N-unit
- office interface unit
- off-line unit
- on-door speakers unit
- operational unit
- outgoing line unit
- output unit
- pan/tilt unit
- peripheral unit
- phase-shifting unit
- phasing unit
- power supply unit
- power unit
- printing unit
- processing unit
- program unit
- programming unit
- quad-on-line unit
- quartz crystal unit
- quick-disconnect control unit
- radio frequency unit
- radio station unit
- rectifier unit
- reference generator unit
- regeneration unit
- registrating unit
- relay testing unit
- relay unit
- remote control unit
- remote display unit
- remote subscriber unit
- replacement unit
- request unit
- resistor unit
- retransmission unit
- RF unit
- selective-gain unit
- self-contained unit
- sensing unit
- shared unit
- shared-control unit
- signal processing unit
- six-wire switching unit
- smooth-closing unit
- sound repetitor protection unit
- spark protecting unit
- stabilizator unit
- still picture unit
- storage unit
- studio devices unit
- sub unit
- subscriber's unit
- subundercarrier unit
- supply unit
- switch point operative communication unit
- switching unit
- synchronization signal unit
- system memory unit
- system unit
- tape unit
- telecine unit
- telecontrol unit
- telephone-control unit
- telephone-modulator unit
- teleprompter unit
- temperature-sending unit
- terminal retransmissions unit
- terminal unit
- terrestrial telemechanics unit
- three-wire switching unit
- time-base unit
- traffic unit
- transfer unit
- transit communication unit
- transmissive unit
- transmitting antenna unit
- tributary unit
- two-section switching unit
- undercarrier unit
- underground telemechanics unit
- unit of power
- vibrator unit
- video request unit
- video-out unit
- voice message control unit
- voice recognition unit
- voicememory unit
- writing unit

- system of catalogs - system of catalogues - system of forces - system of ground points - system of road signs - system of scaffolds - acoustic signalling system - active residential solar heating system - aeration system - air-brake system - air-comfort system - air-conditioning system - air-curtain system - air-foam system - airline system - airline vacuum system - air-pressure water system - all-outside air-conditioning system - arch system - arch-and-pier system - audible alarm system - Automated Data Management System in Building - ADMSB - automatic fire alarm system - balanced system of ventilation - bar system - basic system - beam system - blower system - British absolute system of units - building system - building central air conditioning system - building solar optical system - bypass pipe system - cable system - cantilever tieback system - cathodic protection system of pipelines - central fan electric heating system - central hot water supply system - check-board system - circulating water system - closed system - closed heat supply system - closed pipeline system - collecting system - colour spraying systems - combined extract-and-input system - combined sewerage system - community complete system in containers or skids - composite cable roof system - compressed-air system - computer-aided system - consolidated power system - control system of survey - cooling system - cooling pipe system - coordinate system - curing system - decimal system - designation system - discrete system - discrete-continual system - distributing system - district heating system - double-pipe system - double-pipeline system - double-pipe riser system - downward system of ventilation - drainage system - drencher system - drop system - dry pipe sprinkler system - dry return system - duct system - earthling system - ejector system - elastic system - electric heating system - embedded panel system - emergency power supply system - energy recovery system - engineer's system of units - filling system of navigation lock - filtration system - fire-alarm sounding system - fire-fighting system - fire-sprinkling system - fire warning system - fixing systems - flange system - flooding system - floor system - floor system of bridge - floor heating system - flow-through system - flue gas cleaning system - fluid power system - forced circulation system - four-axis system - framed system - gas heating system - glaze systems - gravity system - gravity water supply system - grid system - hazard system - heating system - heat pump system - heat supply system - high pressure air-conditioning system - high velocity air-conditioning system - hinged system - hoisting system - hot air system - hot blast system - hot water supply system - inflation system - instantaneously variable system - integral deck system - integrated dispatching system - invariable system - ion-exchange system - irrigation system - land system - large public water system - lateral system - left-handed system - lighting system - local air-conditioning system - lock-filling system - long-line system - low pressure air-conditioning system - low velocity air-conditioning system - low voltage system - main system - management system - measuring system - mechanical systems of a house - medium-size public water system - membrane system - metric system - modular coordinating space system - monitoring system - multistage gas supply system - network system - observing system - once-through system - one-layer cable system - one-pipe heating system - one-pipe loop system - open system - open heat supply system - open return system - overhead system of heating - overhead heating system - panel air system - panel cooling system - pipeline system - piping system - plane system - plumbing system - pollution control system - population settlement group system - post-tensioned system - potabilization system - power system - power-reservoir system - pressurized water treatment system - pre-tensioned system - primary system - public transport system - public water system - public waterworks system - quality control system - quarternary system - railroad system - recirculated heating system - recirculation duct air conditioning system - recool system - rectangular system of street layout - reliability coefficients system - remote control system - reusing water supply system - rigid cable roof system - ring heating system - roll-cap system - round duct system - safety valve of a hydraulic system - saprobity system - separate sewerage system - septic system - sewerage system - single duct air-conditioning system - single-stage system - single-track automatic block system - slab-stringer system - smoke-detector system - solar aquatic system - solar cooling system - solar heating system - solar thermal power system - space system - split system - sprinkler system - statically determinate system - statically indeterminate system - steel plate system - structural system - supply air system - suspension system - thermal reheat system - three-dimensional system - three-way system of reinforcement - thrust system - total energy system - two-dimensional system - two-duct air-conditioning system - two-layer cable roof system - two-pipe water heating system - underfloor heating system - underground cable system - unified modular coordination system - universal sewerage system - upfeed water heating system - up-lighting system - utility system - utility detection system - vacuum system - vandalproof system - variable air volume system - ventilation system - warning system - waste treatment system - waste water system - water system - water measuring systems - water purification system - water quality system - water quality indicator system - water supply system - water supply by zones system - water treatment systems - wind bracing system - zone system - system of forces
- system of masses
- system of scaffolds
- ABC system
- AC system
- acoustical ceiling system
- active solar energy system
- aesthetic value system
- air classification system
- air cycle refrigerating system
- airfield soil classification system
- air pollution control system
- air-to-air system
- air-to-water system
- air transport system
- alarm system
- all-air system
- all outside air system
- all-water coil system
- all water fan coil system
- approach lighting system
- arterial system
- Atterberg soil classification system
- audio alarm system
- automated casting system
- automatic fire alarm system
- automatic fire protection system
- automatic flushing system
- balanced system
- balanced system of streets
- balanced ventilation system
- bar system
- beam structural system
- bell alarm system
- Benoto piling system
- bivalent heat pump system
- bleed-in system
- blow and exhaust system
- blow through air-conditioning system
- blow through fan system
- bootstrap system
- box system
- bridge deck structured system
- British soil classification system
- building system
- building automation system
- building-drainage system
- building gravity drainage system
- building management system
- built-in dust suppression system
- burglar alarm system
- cable system
- central air heating system
- central fan system
- centralized hot-water supply system
- central plant air conditioning system
- changeover system
- circulating system
- circulation water supply system
- circulation water system
- closed system
- closed heat-supply system
- closed-loop heat pump system
- closed-type steam heating system
- coding system
- cogeneration system
- cold supply system
- collapsing-ring bridge rail system
- combined drainage system
- combined sewage system
- complanar system of structural members
- complanar force system
- complete-mix activated sludge system
- composite frame system
- compression system
- concrete suspended flooring system
- constant volume system
- continuous conveying system
- continuous suspension system
- control system
- cooling system
- coordinate system
- cost-efficient floor system
- crossbar approach lighting system
- cross blow ventilation system
- curtain walling system
- custom forming system
- decentralized air conditioning system
- decentralized sewerage system
- deluge sprinkler system
- desiccant cooling system
- designation system
- design-built system
- diffusion-absorption system
- digital indicating system
- direct system
- direct air heating system
- direct cooling system
- direct expansion system
- direct hot water system
- direct hot-water supply system
- direct return system
- direct through air-conditioning system
- distribution system
- domestic hot water system
- domestic sewerage system
- "Dot" recording system
- double-pipe system
- double stack system
- down-feed system
- drainage system
- draw-in system
- draw-through fan system
- draw-through system
- drencher system
- drop system
- dry-pipe sprinkler system
- dual conduit system
- duct system
- ductless split air conditioning system
- dust collecting system
- dust extract system
- early warning system
- economical floor system
- ejector refrigerating system
- elastic mechanical system
- elastic system
- electric heating system
- electric reheat system
- energy management system
- environmental system
- exhaust system
- extract system
- FAA soil classification system
- fan coil system
- Federal aviation administration soil classification system
- fire alarm system
- fire-extinguishing system
- fire protection system
- flat plate-pipe column floor system
- floor structural system
- floor system
- flow-through system
- F-number system
- force system
- forming-and-reinforcing system
- Forton system
- four pipe system
- gantry crane system
- gas heating system
- gravity system
- gravity-flow heating system
- gravity sewerage system
- gravity steam heating system
- gravity water-supply system
- grid coordinate system
- gridiron distribution system
- grounding system
- groundwater control system
- group water supply system
- gyratory system
- heat distribution system
- heating system
- heat-of-light system
- heat pump system
- heat recovery system
- heat supply system
- heat-traced system
- high-intensity lighting system
- high temperature hot-water heating system
- high velocity system
- hold-over system
- holonomic system
- hot-air system
- hot water system
- hot-water circulation system
- hush piling system
- hybrid system
- hydraulic control system
- hydrophilic system
- hydrophobic system
- indirect expansion system
- indirect hot-water supply system
- indirect refrigeration system
- individual sewage-disposal system
- induction air conditioning system
- induction system
- industrialized building systems
- inflation system
- instrument landing system
- integral deck system
- integrated distribution floor system
- inverter driven VRV system
- Jackson system
- land system
- large panel system
- lighting system
- line system
- liquid overfeed system
- local sewerage system
- low-pressure system
- low pressure hot water system
- low velocity system
- main system
- maintenance management system
- mass transit system
- materials-handling system
- mechanical system
- mechanical refrigerating system
- mechanical supply system
- medium pressure hot water system
- medium temperature hot water system
- microbore heating system
- modular system
- modular air conditioning system
- modular compression sealing system
- modular decking system
- modular precast building system
- multiple-degree system
- multiple web system
- multiple well system
- multistage gas-supply system
- multizone system
- municipal piping system
- nail-free formwork system
- non-changeover system
- octopus duct system
- oil fired heating system
- once-through water-supply system
- one-degree system
- one-duct air-conditioning system
- one-pipe system
- one-pipe loop system
- one-way system
- open system
- open expansion tank system
- open-loop control system
- open return system
- open steam heating system
- operation system
- overhead heating system
- overhead runway system
- packaged cogeneration system
- panel air-conditioning system
- panel air system
- panel-lock system
- partially-separate system
- piping system
- plane system of forces
- plane grid system
- plenum system
- plumbing system
- pneumatic conveying system
- post-tensioning system
- preaction sprinkler system
- prefabricated pipe conduit system
- pressurization system
- pressurized heating system
- pressurized hot water system
- primary-secondary system
- principal system
- public system
- public waterwork system
- push-through fan system
- push-through system
- quality system
- rail mounted track laying system
- raised floor system
- rapid transport system
- recool system
- recycling system
- recycling water system
- redundant bridge system
- refrigerating system
- regenerative air cycle system
- regional settlement system
- reheat system
- return system
- return air system
- reverse return system
- reverse return upfeed system
- rising heating system
- road system
- roofing system
- run-around system
- safety system
- scraper system
- sealed heating system
- security system
- self-climbing form system
- separate sewerage system
- separate system
- series loop system
- sewage system
- shunt system
- single-degree-of-freedom system
- single-degree system
- single duct air conditioning system
- single-pipe heating system
- single-pipe heat-supply system
- single-stack plumbing system
- single-storey heating system
- single web system
- single-zone air-conditioning system
- slab-stringer system
- small bore heating system
- smoke control system
- smoke extract ventilation system
- soil system
- soil absorption system
- solar heating system
- solid fuel heating system
- split system
- sprinkler system
- state plane coordinate system
- statically determinate system
- statically indeterminate system
- stationary system of loads
- steam heating system
- steel plate system
- storm sewer system
- structural system
- structural monitoring system
- sub-atmospheric heating system
- subbuilding drainage system
- subsurface drainage system
- subsurface sewage disposal system
- supply air system
- supporting formwork system
- suspension structural system
- swing joint system
- taxiway system
- telpher system
- terminal reheat system
- thermal storage heating system
- thermosiphon system
- three-pipe system
- three-pipe air-conditioning system
- three-pipe heat supply system
- total energy system
- track laying system
- trench shoring system
- trussed system
- truss-supported deck system
- tube cleaning system
- two-degree-of-freedom system
- two-degree system
- two-pipe system
- two value system of proportional balancing
- two value system
- two-way system
- underfloor conduit system
- unvented system
- up-feed heating system
- utility detection system
- vacuum heating system
- vacuum return system
- vacuum waste disposal system
- variable air volume system
- variable refrigerant volume system
- variable volume system
- variable water volume system
- VAV system
- vented system
- ventilation system
- VRV system
- VWV system
- warning system
- water-air heating system
- water booster system
- water-supply system
- water-to-air system
- water-to-water system
- wellpoint system
- wet return system
- wind framing system
- wire cable control system
- wiring system
- zoned system
- zone reheat system