The TK85 made by Microdigital Eletronica

The TK85 was a ZX81 clone made by Microdigital Eletronica, a computer company located in Brazil. It came with 16 or 48 KB RAM, and had a ZX Spectrum–style case, similar to a Timex Sinclair 1500. Unlike the ZX81, the TK85 used discrete logic circuits instead of a ULA, and during manufacture, several chips wereContinue reading “The TK85 made by Microdigital Eletronica”