Click on a letter or number to jump to listings of terms that correspond. [ 5 | A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y ] Term Definition Demo VCR Video Cassette Recorder Vent See Port. VGA Video Graphics Array. The basic computer display standard, having 640 x 480 pixel image resolution. See: Pixel, XGA, SVGA,SXGA. VHS VHS = Video Home System. An analog video cassette recording (VCR) system developed by Matsushita (Panasonic, JVC) in 1976. VHS-C Developed for video cameras, it is a physically small tape cassette, in the VHS format, which can record up to about 30 minutes. With an adapter it can be played on any VHS machine. See: VHS Video Shielded See Shielded Loudspeaker Voice Coil A coil of wire attached to the rear of the speaker diaphragm. When a current is passed through the voice coil there is an inductive interaction with the stationary magnetic field generated by the magnet, causing the diaphragm to move. This is the basis of the loudspeaker motor. See Magnet, Motor. Volt See Voltage Voltage Electrical potential difference measured in volts. Volume Audio: loosely, the loudness of sound, and the control that allows us to vary it. Loudspeakers: The cubic measure of space in a speaker enclosure. VOM Volt, Ohm, Milliammeter. An analog meter that measures voltage, resistance and current.