Keyboard Conversion instructions View on archive.org Pages: 5 Date: 1981 Instructions and schematics for ZX80, MicroAce, ZX81. Include circuits for auto-shift, repeating keys. Document Related Content Double "H" Keyboard (product) Double H Electronics (company) Heading Image Gallery Tags Documentation, Double H Electronics, TS 1000, ZX80 People No people associated with this content.
