One late night in the summer of 1972, an electrical engineering graduate student at the University of Washington named Tom Rolander was working in the school’s computer science lab when he saw a “fellow who looked like a student” sporting red hair and wearing cutoffs enter the room. The red-haired man pulled out a teletype, plugged it into a Sigma 5 computer, and started programming an Intel 4004–the very first commercially produced microprocessor, which had been released the previous November.