The Texas Instruments TI-99/4A is a home computer, released June 1981 in the United States at a price of $525 ($1,366 adjusted for inflation). It is an enhanced version of the less successful TI-99/4 model, which was released in late 1979 at a price of $1,150 ($3,749 adjusted for inflation). The TI-99/4 had a calculator-style chiclet keyboard and a character set that lacked lowercase text. The TI-99/4A added an additional graphics mode, "lowercase" characters consisting of small capitals, and a full-travel keyboard. Both used 16-bit processors, making the TI-99/4 series the first 16-bit home computers.
Manufacturer: Texas Instruments
Developer: Texas Instruments
CPU: TI TMS9900 @ 3.0 MHz
Memory: 256 bytes "scratchpad" RAM
Graphics: 16 KB VDP (graphics RAM)
Sound: TI TMS9919, later SN94624
Max Controllers: 2