OT: R 500/7 T Relay computer

[Juergen Keller]

Although it has nothing to do with HP calculators/computers I think some of you may be interested in this computing device. It's built from about 500 electromechanical relays and performing about 7 instructions per second. The computer was developed and built between 2001 and Oct 2006. Here is a short movie showing a demonstration of the computer. Enjoy!

Juergen

[hugh steers]

hi!

Cool demo. He didn’t run the calculator program though.

Back in June, I went up to Bletchley Park. They have an old computer museum there (some HP calculators too). Here’s a picture I took of the Colossus Mk2 running a demo.

Interesting stuff!