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The TK83 followed the TK82. It was a close copy of the ZX81 but offered some enhanced features: 2 KB of RAM expandable up to 64 KB, and a joystick interface.

The tape speed could be either 300 or 4200 baud per second. The machine shipped with a beige or silver case, the same size as the ZX-81's.

Thanks to Franco Girardi for the picture.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
MANUFACTURER  Microdigital
TYPE  Home Computer
ORIGIN  Brazil
YEAR  1981
KEYBOARD  Membrane 40 keys
SPEED  3.25 MHz
RAM  2 KB up to 64 KB
TEXT MODES  32 chars. x 22 lines
GRAPHIC MODES  64 x 44 dots
COLORS  Monochrome
SOUND  Unknown
SIZE / WEIGHT  167 (W) x 175 (D) x 40 (H) mm / 350g
I/O PORTS  Tape recorder, joystick, TV-RF
POWER SUPPLY  External AC adaptor
PERIPHERALS  16 and 48K RAM modules, all of the Sinclair peripherals
PRICE  85$ (USA, 1983)

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