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Altos 686 and 3086. Announced in June 1986, these were a revamping of the 286-based product line. The high-end 3086 supported up to 32 users and had 12.5 MHz processor. This faster processor was now also offered as an upgrade option for the 1086 and 2086 machines, which had a processor board. The 686 model used a 7.5 MHz processor.
Some of the computers were used by the Sheriff’s Department and contained criminal justice information. Dallas County personal, criminal information compromised due to computers sold at auction ...
The watches were manufactured in Dallas and then Lubbock, Texas. Several spin-offs of the Speak & Spell, such as the Speak & Read and Speak & Math, were introduced soon thereafter. [40] In 1979, TI entered the home computer market with the TI-99/4, a competitor to computers such as the Apple II, TRS-80, and the later Atari 400/800 and VIC-20.
This extra 128 KB can only be used for and by the on-board video controller, so it is impractical to expand the on-board memory beyond 640 KB if a VGA graphics card is installed. The computer comes bundled with Personal DeskMate 2. The TX is the last 1000-series computer to use DIP switches to store the system configuration parameters.
The CPU, with four lanes, allowed up to 36 instructions in total across the entire CPU. The processor had forty-eight 32-bit registers, a huge number for the time. 16 of the registers were used for addressing, 16 for scalar operations, 8 for index offsets, and 8 for specifying the various parameters for vector instructions.
Even when designers used a binary system, they still had many odd ideas. Some used sign-magnitude arithmetic (-1 = 10001), or ones' complement (-1 = 11110), rather than modern two's complement arithmetic (-1 = 11111). Most computers used six-bit character sets because they adequately encoded Hollerith punched cards. It was a major revelation to ...