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DS990
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This DS990/1 system was the basic model of the DS990 series which was also comprised of the 990/2, 990/4, 990/10 and 990/12 models. They were targeted as multi-user business systems, and ran the DX10 then the DNOS (Distributed Network Operating System) OS's.
The 990/1 was the only version including its own video display, although up to three serial dumb video terminals could be connected as well. Other versions had a separate main unit managing several terminals, mass storage and printers.
The core of the system was a true 16-bit microprocessor, the TMS-9900, also made by T.I., and mounted later in the first 16-bit home computer, the TI-99/4. Apart from the dumb terminals, interface cards allowed to connect a serial printer and a single or dual 8" floppy disk unit.
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