35 years old Arduino-like setup with Pascal

I do not care much about products or constructions from the past, that cannot be reproduced or used, but in this case, my brother's old construction from the late 1970s made me look again, because it looks so much like what people do with Arduino kits. This is a computer programmed using Compas Pascal or Turbo Pascal: Specs: CPU: Zilog Z80, of model Z80CPU01. This is probably running