Manufacturer: Sega Released: 1990 Units sold: 10.62 million CPU: 8-bit Zilog Z80 @ 3.58 MHz RAM: 8 KB / VRAM: 16 KB Graphics: Sega VDP (custom TI TMS9918) Screen: 3.2 inch (81 mm) backlit LCD Resolution: 160×146 pixels, 32 colors (4096 color palette) Sound: TI SN76489 PSG Cart size: 32 KB to 1 MB