Above left : An original ZX80 and a photo of a ZX81.
The original Spectrum: The inspiration behind a million home computers. It is said that Bill Gates modelled MS-DOS on the Spectrum +3. God knows how. The first (nearly) spectrum, pictured left, had only 16k of RAM and was expandable to a maximum of 48k. So it wasn't too good. But it still continues to capture the hearts of small tribes living in the Brazilian rainforests.