Timex SinclairT/S 1000 (a ZX81 with the same circuit board from the same factory, but with a 2K x 8 RAM chip instead of 1K. This is typically a U.S. model, with a VHF NTSC RF modulator and slightly improved RF shielding, but are the same BASIC machine)
Lambda Electronics Lambda 8300[7] (a 1983 clone, also branded as PC 8300, DEF 3000,[8]Basic 2000, Marathon 32K, Tonel PC, Unisonic Futura 8300, PC-81 Personal Computer, CAC-3, Polybrain P118, Creon Electronics Power 3000[9] or NF300 jiaoXueDianNao[10])