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Business of Engineering

1 Post authored by: rwap
The Sinclair ZX81 was my first home computer - my brother had one as a Christmas present in 1981, and I bought it off him the next year, so that he could upgrade to a ZX Spectrum.   With just 1K of built in RAM, and a 16K RAM pack expansion, I was set to go.  I was soon typing in listings from the computer magazines and teaching myself both ZX BASIC and Z80 Machine Code along the way ( I couldn't afford an assembler and editor, so it was all worked out by hand from the comfort of my s ...