ZX Spectrum 16K and 48K | Mister Spectrum
... contributed to the pressure for Sinclair to provide a more substantial keyboard on the later ZX Spectrum+. Manual and <strong>Horizons</strong> The original ZX Spectrum was accompanied by printed material designed to help new owners get started with the computer. Among these was the Introductory Manual, written by Steve Vickers and Robin Bradbeer. It ...