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The first computer keyboards were for mainframe computer data terminals and used discrete electronic parts. The first keyboard microprocessor was introduced in 1972 by General Instruments, but keyboards have been using the single-chip 8048 microcontroller variant since it became available in 1978.
The technology of computer keyboards includes many elements. Many different keyboard technologies have been developed for consumer demands and optimized for industrial applications. The standard full-size (100%) computer alphanumeric keyboard typically uses 101 to 105 keys; keyboards integrated in laptop computers are typically less comprehensive.
The LGP-30 was first manufactured in 1956, at a retail price of $47,000. The LGP-30 was commonly referred to as a desk computer, as it was the size of a desk. It weighed about 800 pounds (360 kg). It was a binary, 31-bit word computer with a 4096-word drum memory. Standard inputs were the Flexowriter keyboard and paper tape. The standard output ...
Pictures and information on old computers; PowerSource Online: New, Used, Refurbished, Hard to Find Parts, Equipment & Services; History of Computers (1989–2004) in PC World excerpts; How It Works – The Computer, 1971 and 1979 editions, by David Carey, illustrated by B. H. Robinson; PC History Stan Veit's classic work on the history of Pre ...
With a larger external monitor, the graphics hardware is also used in the original Compaq Deskpro desktop computer. Compaq used a "foam and foil" keyboard from Keytronics, with contact mylar pads that were also featured in the Tandy TRS-80, Apple Lisa 1 and 2, Compaq Deskpro 286 AT, some mainframe terminals, SUN Type 4, and some Wang keyboards ...
Tandy/Radio Shack TRS-80 Model I. In the mid-1970s, Tandy Corporation's Radio Shack division was a successful American chain of more than 3,000 electronics stores. Among the Tandy employees who purchased a MITS Altair kit computer was buyer Don French, who began designing his own computer and showed it to the vice president of manufacturing John V. Roach, Tandy's former electronic data ...
The keyboard value is used as the sector address on the disk to boot from, and by holding specific keys down while pressing the boot button, different microcode and operating systems can be loaded. This gave rise to the expression "nose boot" where the keys needed to boot for a test OS release requires more fingers than the user can articulate.
The magazine praised the price ("Looking at a picture...might cause you to think $600 would be a fair price...But it does not cost $600 —the VIC 20 retails for $299.95 "), keyboard ("the equal of any personal-computer keyboard in both appearance and performance. This is a remarkable achievement, almost unbelievable considering the price of ...