Sinclair' s first personal computer wITh a colour display. The Spectrum used the Zilog Z80 processor like ITs predecessors the ZX-80 and ZX-81. IT was originally available in 16k and 48k versions using cassette tape and later grew to 128k and sprouted floppy disks. IT had a wider and more solid case and a marginally better "dead flesh" keyboard. Unlike the earlier models, IT didn' t require the presence of a cold carton of milk to prevent IT overheating. IT was possibly the most popular home computer in the UK for many years. The TK-90X was a clone. (1995-11-04)