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The VT50 was sold only for a short period before it was replaced by the VT52 in September 1975. [1] The VT52 provided a screen of 24 rows and 80 columns of text and supported all 95 ASCII characters as well as 32 graphics characters, bi-directional scrolling, and an expanded control character system.
In addition, the VT100 provided backwards compatibility for VT52-compatible software, by also supporting the older control sequences. [4] Other improvements beyond the VT52 included a 132-column mode, and a variety of "graphic renditions" including blinking, bolding, reverse video , underlining, and lines of double-sized or double-width characters.
The VT520 is an ANSI standard computer terminal introduced by Digital Equipment Corporation (DEC) in 1993 and 1994. [1] The VT520 is a multi-session monochrome text-only terminal with a built-in 14" monitor.
In 1983-1984, during the design phase of the IBM Model M keyboard, the VT220 was a new and very popular product. IBM's design team chose [ 9 ] to emulate its LK201 keyboard layout. Key innovations that IBM copied were the inverted-T shape of the arrow cluster, the navigation keys above it, and the numeric keypad off to its right.
The 63-key keyboard followed the ANSI X4.14-1971 typewriter layout, and included a further 19 keys for numeric input and various controls. The tractor feed was much more flexible, with a horizontally-fixed pin-drive on the left and an adjustable one on the right, allowing it to feed paper from 3 to 14.875 inches (76.2 to 377.8 mm) wide and to ...
The Gold Key is used to invoke single-key functions which may be located on either the main keyboard or the numeric keypad. For example, on the WPS-8 word processing system, the main keyboard key C is marked "CENTR", in gold lettering, on its front surface; the keystrokes GOLD C invoke that word processing function to center the current line of text.