| Manufacturer: | Atari |
| Model: | 400 |
| Released: | 1979 |
| Production ends: | ? |
| Processor: | MOS 6502A, 8 Bit |
| Mhz: | 1,79 (NTSC), 1,77 (PAL) |
| Co-Processor: | - |
| RAM: | 8 KB, expandable to 48 KB (later versions with 16 KB) |
| ROM: | 10 KB |
| Operating Systems: | Atari-OS (in ROM), Basic on Cartridge |
| Graphic, Resolution: | Graphic: 320x192 monocrom, 160x96 4 Colors, 80x48 4 Colors, 40x24 4 Colors Text: 40x24 monocrom, 20x24 5 Colors, 20x12 5 Colors (Graphicchips: ANTIC + GTIA) |
| Colors: | 5 of 128 (128 with special software) |
| Sound: | 4 Channel, mono, build in Speaker (Chip: POKEY) |
| Ports: | 1 HF, 4 Joystick!!!, 1 Cartridgeport, 1 serial |
| Keyboard: | 61 Keys, QWERTY |
| Internal Drives: | - |
| Specials: | Metalbox, Basic on Cartridge |
| Accessories: | Discdrive, Tapedrive |
| Sold in: | worldwide |
| Launch price: | ? |
| Sold Pieces: | ? |
| Got own one from: | Market DM 10,- |
