Mini Z80 system

Call it what you like: an all-time favourite, an evergreen in computer land, or just a die-hard electronic component: the Z80 B-bit microprocessor enjoys tremendous popularity because it is inexpensive, widely available and easy to program. Furthermore, a massive amount of software and paperware is available for this powerful CPU. Here, we present a no-frills miniature computer system based on the Z80 CPU, with 1/0 and ROM. No RAM, no, because that is not strictly necessary for small applications if your programming is up to scratch (but we have a RAM extension up our sleeve).