Yeah, this particular canal has two bridges that have to open in fairly short sequence (the University and the Montlake), and I'd always assumed that it was don

Yeah, this particular canal has two bridges that have to open in fairly short sequence (the University and the Montlake), and I'd always assumed that it was done by a guys pressing buttons in a booth that triggered some sort of relay system. Given the presence of the guys and the booths, the age of the bridges and the generally conservative nature of civil engineering, I'm pretty surprised that there's any computer involved in the process at all, let alone one from the early days of personal computers.