HEATHKIT H8

This 8-bit machine, by itself is as versatile as a lot of systems that include peripherals
Skeptical? For starters, because of its unique design the H8 is the only machine in its price class that offers full system integration yet, with just 4K of optional memory and using only its "intelligent" front panel for I/O, may be operated completely without peripherals! In addition, by using the features of its built-in Pam-8 ROM panel control program, the H8 actually allows you to dig in and examine machine level circuitry.