Introduction The Zilog Z80 is an 8-bit microprocessor developed by Federico Faggin and his 11 employees in early 1975. The first working samples were delivered in March 1976, and Z80 was officially introduced on the market in July 1976. The Z80 is a backwards-compatible enhancement of the Intel 8080. Z80 quickly became one of the most widely used CPUs in desktop computers and home computers from t