USB parallel ports, data acquisition peripherals, or modern boards that run linux and have GPIO pins are already a thing and don't need to be created. What I'm

USB parallel ports, data acquisition peripherals, or modern boards that run linux and have GPIO pins are already a thing and don't need to be created. What I'm talking about is a whole computer system + systems programming language + OS which is as simple to understand and program as computers were in the 80s. With modern speedups, without modern layers of abstraction.