The TI-99/4A is a self-contained console with the CPU, motherboard, ROM cartridge slot, and full-travel keyboard in the same case. Even with the increased user base created by the heavy discounts, after a US$330 million loss in the third quarter of 1983, Texas Instruments announced the discontinuation of the TI-99/4A in October 1983 and stopped production in March 1984. By 1983, the 99/4A was selling for under US$100, at a loss. Commodore's CEO Jack Tramiel had once been offended by TI's predatory pricing during the mid-1970s, and retaliated with a price war by repeatedly lowering the price of the VIC-20 and forcing TI to do the same. The TI-99/4A was launched about the same time as the Commodore VIC-20. TI released developer information and tools, but the insistence on remaining sole publisher continued to starve the platform of software. TI supported the 4A with a peripherals, including a speech synthesizer and a "Peripheral Expansion System" box to contain hardware add-ons. At half the price of the original model, sales picked up significantly. It includes a simplified internal design, a full-travel keyboard, improved graphics, and a unique expansion system. The TI-99/4A was released in June 1981 to address some of these issues.
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The calculator-style keyboard is a weak point, and the system suffered a lack of commercial software because of TI's requirement for ROM cartridge and only providing developer information to select third parties.
TI's own video display controller allows color graphics and among the best sprite support of its era. Based on the Texas Instruments TMS9900 microprocessor originally used in minicomputers, it was the first 16-bit home computer. The TI-99/4 is a home computer released in late 1979 by Texas Instruments.
Home computer by Texas Instruments Texas Instruments TI-99/4A
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