NEC TK-80

In August 1976, NEC marketed the low-cost fully-operational TK-80 assembly kit for hobbyists. This was done to achieve greater dissemination of microcomputers. The TK-80 was equipped with the µ PD8080A (which was compatible with the 8080 8-bit microprocessor from Intel), an LED (Light Emitting Diode) display and a hexadecimal keyboard. The machine enabled creation and execution of programs in machine language. In addition to the assembly manual, the system came with a circuit diagram and a program listing for basic software called a "monitor".