Sinclair ZX81: Difference between revisions
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! [[File:ZX81_Schematic.png|thumb|center|500px|Sinclair ZX81 circuit diagram]] | ! [[File:ZX81_Schematic.png|thumb|center|500px|Sinclair ZX81 circuit diagram]] | ||
! [[File: | ! [[File:Sinclair ZX81 PCB Top.JPG|center|thumb|260x260px|Original Issue 1 board – note layout changes]] | ||
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