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ZX81_Centronics — Projects for Sinclair computers (ZX80, ZX81, TS1000, TS1500, TS2068, Spectrum and clones) | Open App Note

Sinclair

BrettHallen

Projects for Sinclair computers (ZX80, ZX81, TS1000, TS1500, TS2068, Spectrum and clones)

Components (14)

Reference	Value	Description
Q1	BC558
U1	74LS27
U2	74LS32
U3	74LS30
U4	8255
BUS1	CONN_ZX81
C1,C5	10µF
C2-C4,C6	100nF
J1	CENTRONICS
R1	10KΩ
R2	2.2KΩ
R3	100KΩ
R4	4.7Ω
SW1	SW_Push

Sinclair schematic

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Sinclair board