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ZX81

The ZX81 is a home computer that was produced by Sinclair Research and manufactured in Dundee, Scotland, by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and designed to be a low-cost introduction to home computing for the general public. It was hugely successful; more than 1.5 million units were sold. In the United States it was initially sold as the ZX-81 under licence by Timex. Timex later produced its own versions of the ZX81: the Timex Sinclair 1000 and Timex Sinclair 1500. Unauthorized ZX81 clones were produced in several countries.

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Project  ZX81 Mechanical Keyboard

ZX81 Mechanical Keyboard

“A mechanical keyboard that’s compatible with the Sinclair ZX81, as well as the ZX81+38 modern recreation of that machine. This repository contains all the design files as well as various exported versions and images. Please carefully review any …

Project  SINCLAIR ZX81 Sound Digitizer

SINCLAIR ZX81 Sound Digitizer

“I wrote the original source code of my now published program in 1986. I recently found it in one of the old spiral notebooks. I typed it but it didn’t work because it has a lot of errors. Unfortunately …

Project  Build a 64kB home computer based on an Arduino Mega 256

Build a 64kB home computer based on an Arduino Mega 256

“This is another retro compute project. Use an Arduino Mega256, 64kB serial RAM, a display and a keypad to build a standalone computer. The idea I had the idea to build a standalone computer resembling the old ZX81 computer when …

Project  Read a ZX81 keyboard with Arduinos and build things with it

Read a ZX81 keyboard with Arduinos and build things with it

“Connect a ZX81 keyboard to an Arduino. This is a tutorial to quickly get the keyboard running and use if for all kinds of applications. The ZX81 was one of the iconic computers of the 80s. They made a computer …