video magnetic disk
71History of operating systems — The history of computer operating systems recapitulates to a degree the recent history of computer hardware. Operating systems (OSes) provide a set of functions needed and used by most application programs on a computer, and the linkages needed… …
72Corona — This article is about the astronomical term. For other uses, see Corona (disambiguation). During a total solar eclipse, the solar corona can be seen with the naked eye. A corona is a type of plasma atmosphere of the Sun or other celestial body,… …
73LIMDOW technology — Light Intensity Modulated Direct OverWrite (LIMDOW) technology uses a different write technology which significantly improves on the performance levels of earlier Magneto optical devices and claims to be a viable alternative to hard disk drives… …
74DV — For other uses, see DV (disambiguation). DV compatibility mark DV is a format for the digital recording and playing back of digital video. The DV codec was launched in 1995 with joint efforts of leading producers of video camcorders. The original …
75photography, 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… …
76Automated teller machine — cash machine redirects here. For the Hard Fi song, see Cash Machine. An NCR Personas 75 Series interior, multi function ATM in the United States …
77Camcorder — Canon HD camcorder A camcorder (videocamera recorder) is an electronic device that combines a video camera and a video recorder into one unit.[1][2] …
78History of sound recording — Methods and media for sound recording are varied and have undergone significant changes between the first time sound was actually recorded for later playback until now. Technology Mechanical recording The first devices for recording sound were… …
79Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
80Digital recording — Audio levels display on a digital audio recorder (Zoom H4n) In digital recording, digital audio and digital video is directly recorded to a storage device as a stream of discrete numbers, representing the changes in air pressure (sound) for audio …
