The power of the Sinclair ZX Spectrum comes from a new 16K BASIC ROM . So, in addition to the features of the ZX81, the ZX Spectrum gives you a full 8 colours, a sound generator, high-resolution graphics and many other features - including the facility to support separate datafiles.
The storage capacity of any computer is governed by the amount of RAM. The ZX Spectrum comes in two versions - with 16K, or a really massive 48K, of RAM. Yet even the 48K RAM version costs only £175 compared to £125 for the 16K RAM model.
Many people will opt for the full 48K RAM from the outset, but if you do decide to start with the 16K version, you will be able to return your ZX Spectrum for a 48K RAM upgrade at a later date - at a cost of around £60.
