Scans of adverts for ZX81 Software & Hardware Links to Various ZX81 Emulators Over 1000 P files to use with the emulators.Virtually every game/utility including classic's like 3d Monster Maze & ZX-Galaxians Pictures of the machine itself and various hardware

Scans of Tape Inlays Technical Specifications and circuit diagrams.
ZX81 Technical Specifications.
CPU: Z80A at 3.5 MHz
ROM: 8 Kbytes
RAM (expandable) 1 (16) KByte
Display: TV 
Text display: 32*15
Graphics display: 64 *44
Colours: black and white
Sound: none!
Keyboard: Touch Sensitive membrane keyboard
Interface: Expansion Bus
Data Storage: Cassette Based via Earphone & Microphone 3.5mm Connection
Power Supply: External 9v DC power pack


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