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Last modified 2026-02-01

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Sinclair ZX80

A picture of Sinclair ZX80

SPECIFICATIONS

GENERAL
Type:8-bit home computer
CPU:NEC 780C-1 @ 3.25 MHz (Z80 compatible)
Operating system(s):Sinclair Basic
Memory:ROM: 4 KB (Expandable to 8 KB)
RAM: 1 KB (Expandable to 64 KB)
Power supply:9 VDC
Current drain / power consumption:? mA
Dimensions (W*H*D):219*40*175 mm (8.62*1.57*6.89")
Weight:375 g (13.2 lb)




I/O
Keyboard:Integrated touch keyboard
Graphics: Text: 32*22 characters
Graphics: 64*44 pixels, black and white
Audio:No
Storage:Tape recorder
External I/O ports / connectors:
Tape I/O:   ?
RF out:   ?
ZX bus:   ?-pin edge connector
Other:




MISCELLANEOUS
Manufactured:England, 1980-1981 (Discontinued)
Additional info: Initially, the company name was Science Of Cambridge.

New price 1981 in Sweden: SEK 995:- (Kit), 1195: (Factory built)
Related documents:
Modifications and fixes:
Notable "ham" software: "QTH locator/Contest score" - By G4ANB and G3UBX (Requires 8K ROM)
"Distance & bearing" - By G4ANB and G3UBX (Requires 8K ROM)
"Sprog finder" - By G4ANB and G3UBX (Requires 8K ROM)
Reviews:
Some options / Accessories:
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An inside picture of Sinclair ZX80