Uploaded November 2020 | Updated September 2026, 1 week ago

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MODEL ATOM
MANUFACTURER Acorn Computers
TYPE Home Computer
ORIGIN United Kingdom
YEAR 1980
END OF PRODUCTION 1983
BUILT IN LANGUAGE Basic, machine-code
KEYBOARD QWERTY, full-stroke keyboard, 60 keys
CPU 6502
SPEED 1 mHz
CO-PROCESSOR 6847 Video Display Generator, PIA 8255 (keyboard & tape)
RAM 2 KB (up to 12 KB, or 32 KB using external RAM expansion.)
VRAM 6 KB
ROM 8 KB (Atom BASIC and COS), up to 16 KB
TEXT MODES 32 x 24 / 16 x 12
GRAPHIC MODES 64 x 64 (4 colors), 64 x 96 (4 colors), 128 x 96 (monochrome), 64 x 192 (4 colors), 128 x 192 (2 colors), 256 x 192 (monochrome)
COLORS 8
SOUND Built-in beeper
I/O PORTS Tape interface & control, UHF Modulated TV output, Acorn Bus Extension
POWER SUPPLY External PSU - 8v 1.8A - Later: 2A

Amusing and interesting movie about this unforgettable era:
youtube.com/watch?v=XXBxV6-zamM

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