ZX81 Keyboard Upgrade - 1

This model has been fitted with a 3rd party upgrade to the keyboard. It is a large, plastic device that is stuck over the original keyboard to make the buttons larger and easier to hit.

Manufacturer: Sinclair
Date: Unknown

ZX81 Keyboard Upgrade - 1 Manuals:

Item	Manufacturer	Date
Ground Control - ZX81 16K RAM Pack Instructions	Ground Control	Unknown
Sinclair ZX81 learning lab		1981
Sinclair ZX81 Learning Lab	Sinclair	1981

ZX81 Keyboard Upgrade - 1 Articles:

Item	Manufacturer	Date
Memories - Learning with the ZX81		Unknown
Sinclair ZX81 - Review		Jun 1981

Magazines RELATED to ZX81 Keyboard Upgrade - 1 in our Library

Item	Manufacturer	Date
Personal Computer World - June 1981		Jun 1981
Personal Computer World - January 1982		1 Jan 1982
Practical Electronics April 1982		Apr 1982
Personal Computer World - December 1983		Dec 1983
Practical Computing - June 1981		9 Sep 2009

Other Systems Related To ZX81 Keyboard Upgrade - 1:

Item	Manufacturer	Date
Prototype of MK14	Sinclair	1977
Science of Cambridge MK14 + Original Keyboard	Sinclair	1977
Science of Cambridge MK14 - Original Kit	Sinclair	1977
Science of Cambridge MK14 + Memory Expansion in wooden case	Sinclair	1977
Science of Cambridge MK14	Sinclair	1977
Sinclair ZX80 Updated to ZX81	Sinclair	1980
Sinclair ZX80	Sinclair	1st June 1980
Sinclair ZX80	Sinclair	1st June 1980
Sinclair ZX81 Kit	Sinclair	1981
Sinclair ZX Spectrum Prototype	Sinclair	1981
Sinclair ZX81 - Signed by Rick Dickinson	Sinclair	5th March 1981
Sinclair ZX81 with Custom Case/Keyboard	Sinclair	5th March 1981
Sinclair ZX81 Issue One	Sinclair	5th March 1981
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Sinclair Spectrum with Homemade Keyboard	Sinclair	1982
White Replica ZX Spectrum (Millionth Edition)	Sinclair	1982
Early Sinclair ZX Spectrum Computer	Sinclair	1982
Timex Sinclair 1000	Sinclair	1982
Sinclair ZX Spectrum Console	Sinclair	1982
Sinclair ZX Spectrum Console	Sinclair	1982
ZX Spectrum Issue 2 With ULA Modification	Sinclair	1982
Timex Sinclair 1500	Sinclair	1982
Sinclair ZX Spectrum Case (Signed)	Sinclair	1st March 1982
Sinclair ZX Spectrum 48k	Sinclair	1st March 1982
Sinclair ZX Spectrum 16K	Sinclair	1st March 1982
Sinclair QL + SchÖn Keyboard	Sinclair	1984
Sinclair QL (German)	Sinclair	1984
Sinclair QL (Signed)	Sinclair	1984
Sinclair QL (US)	Sinclair	1984
Sinclair QL (Property of Sinclair)	Sinclair	1984
Sinclair QL	Sinclair	1984
Sinclair ZX Spectrum+	Sinclair	1st June 1984
Sinclair ZX Spectrum +2	Sinclair	1986
Sinclair ZX Spectrum 128	Sinclair	January 1986
Sinclair ZX Spectrum 128	Sinclair	1st June 1986
Cambridge Z88 All In One Pack	Sinclair	1987
Cambridge Z88	Sinclair	1987
Sinclair ZX Spectrum +3 (Currys Box)	Sinclair	1st June 1987
Sinclair ZX Spectrum +3	Sinclair	1st June 1987
Sinclair PC200	Sinclair	1988
Cambridge Z88 With PC Link Kit	Sinclair	1988