the Atom was a progression of the MOS Technology 6502 based machines that the company experienced been making from either 1979. the Atom was a cut-down Acorn System 3 without a disk cause however using an integral keyboard & cassette tape interface, sold within either kit or even complete form. It was priced at as much as £175.

It got the MC6847 VDU streaming chip, allowing text or even both-colour graphics modes. It can be attached to the TV or even modified to output to the videos monitor. Basic cd memory was Unity kbyte however can be expanded to Sextet kbyte. The PAL colour card was also available.

It experienced built-integral BASIC (Atom BASIC), although in an idiosyncratic version, which involved poke & urge operators for bytes & quadruple bytes. It when well involved an assembly program permitting busy people to develop machine language as output of the program.

A Acorn LAN, Econet, was first configured on the Atom.

A experience was designed by industrial designer Allen Boothroyd of Cambridge Product Design Ltd.

Specifications

CPU: MOS Technology 6502 Speed: Unity MHz RAM: 2 kB, expandable to Xii kB ROM: 8 kB, expandable to 12kB using various Acorn & Third person ROMs Healthy: Ace channel, integral loudspeaker Size: 381 ten 241 x 64 mm I/O Ports: Computer Users Tape Standard (CUTS) interface, TV connector, Centronics parallel printer Storage: Kansas City standard audio cassette interface Power: Octonary volts DC, providing Pentad volts stabilised