A video tape recorder (VTR) is a tape recorder designed to record and play back video and audio material from magnetic tape. The early VTRs were open-reel devices that record on individual reels of 2-inch-wide (5.08 cm) tape.
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IBM 610
invented by IBM
The IBM 610 Auto-Point Computer is one of the first personal computers, in the…
invented by Ray Tomlinson
Electronic mail (email or e-mail) is a method of exchanging messages…
Z1
invented by Konrad Zuse
The Z1 was a motor-driven mechanical computer designed by Konrad Zuse from 1936…
Quartz clock
invented by J.W. Horton Warren Marrison
Quartz clocks and quartz watches are timepieces that use an electronic…
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