Manufacturer: Texas Instruments Released: 1979 (TI-99/4), 1981 (TI-99/4A) Units sold: 2.8 million OS: TI BASIC CPU: 16-bit TMS9900 @ 3 MHz RAM: 256 bytes / VRAM: 16 KB Graphics: TMS9918A VDP Resolution: 256×192 pixels, 16 colors Sound: TMS9919 or SN94624, 3 voices + 1 noise channel Media: Cartridge, cassette, floppy disk