TK-90X
<computer> A Brazilian
clone, manufactured by Micro Digital, of the British
Sinclair Research ZX Spectrum 8-bit {microcomputer}.
It differed from the standard Spectrum by adding an Interface 2-compatible joystick interface, and extra BASIC commands to aid programming and graphics-editing.
Because of these differences, it was slightly incompatible with the standard Spectrum.
A later model, the TK-95, which boasted an improved keyboard (similar to the Commodore 64's) and a more compatible ROM, was little more than a Timex TC2048 (another Spectrum clone) in disguise.
comp.sys.sinclair FAQ (http://www.kendalls.demon.co.uk/cssfaq/).
["comp.sys.sinclair FAQ", D Burke M Fayzullin P Kendall et al, pub. Philip Kendall 1998]
