Sigma Technical Press

Company · UK

Published

1978 1

Computer Programs That Work!

1981 1

Byteing Deeper into Your ZX81

1983 5

Build Your Own Expert System · Fifty Subroutines for the Sinclair Spectrum · Micro Cloak and Dagger Book · The Complete FORTH · The Sinclair Spectrum in Focus

1984 3

Sinclair QL User Guide · Sinclair Spectrum and ZX81 Add-ons · Spectrum Graphics LOGO

1985 3

Astronomer's Software · Starting LOGO · The Real Thing? Microcomputer Simulations on the Sinclair QL

1986 1

Microcomputer Game Design

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Same person at Spectrum Computing