Does an old school washer dryer that runs off timer relays / knobs / push buttons really have a CPU? I ask because that's how mine is and I haven't had to look at the controls but they seem dead simple to me. I get there's different cycles but some simple ladder logic should be able to handle that, no? Half the world runs on simple machines like that.

[–] CADmonkey@lemmy.world 3 points 9 months ago

Does an old school washer dryer that runs off timer relays / knobs / push buttons really have a CPU?

Nope, it's just a timer-drive. cam triggering switches. The physical cam IS the CPU.

We have reached a point in time where there are adults who think everything that runs through multiple steps must have a microcontroller, because only really really old machines* do without.

*For the most part. I bought a brand new whirlpool dryer late last year, and it has a mechanical timer in it.