Microdigital TK85

Historia

The TK85 was a ZX81 clone made by Microdigital Eletronica, a computer company located in Brazil. It came with 16 or 48 kB RAM, and had a ZX Spectrum-style case, more precisely a Timex Sinclair 1500 clone.

Características

Lenguajes  	Improved version of the ZX81 Basic
Teclado  	40-key QWERTY rubber Teclado with up to 5 function per key
CPU  	Zilog Z80 A
Velocidad  	3.25 MHz
RAM  	16 KB up to 48 KB
ROM  	10 KB
Modos de Texto  	32 columns x 24 lines
Modo gráfico  	64 x 44 dots
Coloresc  	Monochrome
Tamaño/Peso  	23 (W) x 14 (D) x 3 (H) cm / 500g
Puertos de entrada/salida  	Expansion port, Tape-recorder, RF video out, Joystick
Almacenamiento interno  	None
Perifericos  	Microdigital printer, all ZX81 Perifericos

Curiosidades

It had some special features like high speed (1500 bps) load and save