tape perforations

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• control tape — control tape, a paper or plastic tape bearing coded instructions in the form of perforations, used to guide the operation of numerically controlled machine tools …   Useful english dictionary

• printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …   Universalium

• motion-picture technology — Introduction       the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …   Universalium

• Film stock — This focuses on motion picture film. For still photography film, see photographic film. A film strip Film stock is photographic film on which filmmaking of motion pictures are shot and reproduced. The equivalent in television production is video… …   Wikipedia

• Player piano — The player piano is a self playing piano, containing a pneumatic mechanism that plays on the piano action pre programmed music via perforated paper rolls. The rise of the player piano grew with the rise of the mass produced piano in the house and …   Wikipedia

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium

• English Electric KDF8 — KDF8 was an early British computer designed and built by English Electric, later English Electric Leo Marconi, EELM, later still incorporated into ICL. Background During the late 1950s English Electric embarked on two major computer projects.… …   Wikipedia

• electronic instrument — ▪ music Introduction       any musical instrument that produces or modifies sounds by electric, and usually electronic, means. The electronic element in such music is determined by the composer, and the sounds themselves are made or changed… …   Universalium

• 16 mm film — refers to a popular, economical gauge of film used for motion pictures. Other common film gauges include 8 mm and 35 mm. 16 mm refers to the width of the film. History 16 mm film was introduced by Eastman Kodak in 1923 as an inexpensive amateur… …   Wikipedia

• Chad (paper) — Chads from punched cards. Each chad is about 1/8 inch (3 mm) long …   Wikipedia

• Coil stamp — This 2 cent coil stamp of the US 1954 Liberty series was used heavily throughout the 1950s and 60s. A coil stamp is a type of postage stamp sold in strips one stamp wide. The name derives from the usual handling of long strips, which is to coil… …   Wikipedia