Atari 400 User Manual

16 User's Handbook to the Atari 400 / 800 Computers
Illustration 1-6. Atari 810 Disk Drive
The Atari 810 disk drive can only be used with the Atari 800
computer with a minimum of 16K of RAM.
Atari Printers
Atari produces three different printers; the 820 Printer, 822
Thermal Printer, and 825 Wide Carriage Printer.
The 820 and 822 Printers are connected to the Atari computer via
the I/ O Data Channel. The 825 Printer is connected to the Atari
computer with the 850 Int erface Module . The 850 Interface
Module can be used to connect printers other than the 825 to the
Atari.
Atari 850 Interface Module
The Atari 850 Interfa ce Module allows communications between

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)