If you were selling computers in the early 1960s you faced a few problems ... went all out with devices like the DEC H-500 Computer Lab, which retrocomputing wizard [Michael Gardi] is currently ...

We mean things like creating a simulator and assembler for the OBP spaceflight computer, which was used in the OAO-3 Copernicus space telescope, pictured above. Far from being a niche and ...