Vintage Texas Instruments TI 99/4a Home Computer System
Item History & Price
Texas Instruments TI-99/4A Vintage Home Computer in originalboxVintage Texas Instruments TI99/4A Home Computer in OriginalBox.Condition: new open boxThis unit is new in box, never been powered on, you can seethat power supply and a/v cable are in original wrapping. Comes with all paperwork, the bag has never been opened.The Texas Instruments TI-99/4A is a homecomputer released in June 1981 in the United States. It is an enhancedversion of the less successful&nb...sp;TI-99/4 which was released in late1979. The TI-99/4 and TI-99/4A are the first 16-bit home computers, usingthe Texas Instruments TMS9900 16-bit CPU. Both models includehardware support for sprites, using TI's own chips, and multi-channelsound, making them some of the first home computers to include such customcoprocessors, alongside the Atari 8-bit family also introduced in1979.The TI-99/4A remained mostly the same as its predecessor, with the major changes being a full-travel keyboard to replace thecalculator-style keys, an improved graphics chip with support for bitmap modes, and a cleaner method of adding expansion cards. The price was also half of theoriginal model. Texas Instruments supported the 4A with a line of peripherals, including a speech synthesizer, and a "Peripheral Expansion System"box to contain hardware add-ons.
