Computers & Electronics (v21 n9)

Date: September 1983
Volume: 21
Issue: 9


  • Improving Timex/Sinclair Tape Loading
    Reduce troublesome dropouts and noise problems with a Z-Dubber. Schematic and PCB layout for the Z-Dubber is provided.
  • Timex/Sinclair Expansion
    Product announcement for Wisconsin Electronics’ 32K plus I/O module. Adds four parallel I/O ports and 32K RAM.
  • Upgrading T/S Video
    Correction to “Upgrading Timex-Sinclair Video” in the May 1983 issue to address a revision to the ZX81 circuit.


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