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The Xerox Alto is a computer system developed at Xerox PARC (Palo Alto Research Center) in the 1970s. It is considered one of the first workstations or personal computers , and its development pioneered many aspects of modern computing.
The Altos 486 was however based on an 8-MHz Intel 80186 processor and also ran Xenix. It was however cheaper than their 586. [23] Altos 886, 1086, and 2086. Based on a 80286 central processor, and intended to support 8, 10, and respectively 20 users at terminals. The 886 used a 7.5 MHz processor, while in the other two it ran at 8 MHz. [24]
The SDS 940 was Scientific Data Systems' (SDS) first machine designed to directly support time-sharing. The 940 was based on the SDS 930's 24-bit CPU, with additional circuitry to provide protected memory and virtual memory. It was announced in February 1966 and shipped in April, becoming a major part of Tymshare's expansion during the 1960s.
For higher resolutions, the logic and the memory chips were barely fast enough to support reading the display data, let alone for dedicating half the available time for the slow 8-bit CPU. That being said, one system, the Apple II , was one of the first to use a feature of the data-bus logic of the 6502 processor to implement a very early ...
Tesler and Fairbairn took the 16 kilograms (35 lb) NoteTaker prototype on cross-country trips to demonstrate the unit to Xerox executives. At one layover during the trip, Tesler and Fairbairn briefly tested the unit at an airport and while in flight, which Tesler believed was the first-ever use of a computer in these situations. [4]
Diablo Data Systems was a division of Xerox created by the acquisition of Diablo Systems Inc. for US$29 million in 1972, [1] [2] a company that had been founded in 1969 by George E. Comstock, Charles L. Waggoner and others. [3] [4] The company was the first to release a daisy wheel printer, in 1970. Metal Daisy Wheel for Xerox & Diablo printers
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Bravo was the base for Gypsy, a later document system on the Alto, the first with a modern graphical user interface. Bravo was followed by BravoX, which was developed in 1979 [ 3 ] under Simonyi's leadership at Xerox's Advanced Systems Development (ASD) group.