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History
Texas Instruments SN76489
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The SN76489 Digital Complex Sound Generator (DCSG) is a TTL-compatible programmable sound generator chip from Texas Instruments. Its main application was the generation of music and sound effects in game consoles, arcade games and home computers, competing with the similar General Instrument AY-3-8910.
Image: SN76489 01
Image: SN76489 01
TI-99/4A
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The TI-99/4 and TI-99/4A are home computers released by Texas Instruments in 1979 and 1981, respectively. The TI-99 series competed against home computers such as the Apple II, TRS-80, Atari 400/800, and VIC-20.
TI-99/4A
TI-99/4A
TI-99/4A
TI-99/4A
Peripheral Expansion Box or PEB
Peripheral Expansion Box or PEB
Late period, cost-reduced version of the TI-99/4A with beige case
Late period, cost-reduced version of the TI-99/4A with beige case