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V

VCR - Video Cassette Recorder

VDU - Visual Display Unit

VHS - Video Home System

The leading standard for analogous video tapes. Other standards are, for example, Video2000 and Beta. VHS cassettes are marked E-180/240/300 etc. for tapes that are 180/240/300 minutes long, respectively.

VHS-C - Video Home System - Compact

A smaller analogous video standard, based on VHS. VHS-C cassettes are marked, for example EC-30 for a 30 minutes long tape.

VRML - Virtual Reality Modelling Language

Description language for 3-dimensional scenes. This is a 3d-hyperformat to click through virtual worlds. Will be used in the WWW.

VTR - Video Tape Recorder

V.n - (transfer protocols)

There are numerous different transfer protocols named V.n (transfer rates in bps):

V.21
V.22
V.22bis (2400 bps)
V.23 (1200 bps)
V.24 - interface standard for data transfer of, for example, fax-machines, fax-printers and PCs
V.32 (9600 bps)
V.32bis (14400 bps)
V.32terbo (19200 bps)
V.34 (28800 bps)
V.90 (56000 bps)
V.110 (38400 bps) - an ISDN protocol, used on Compuserve
V.120 (57500 bps) - an ISDN protocol, used on Compuserve

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