CASIO fx-5200P Scientific Computer teardown

[damaltor]

Those are beautiful devices, i have quite a lot of the series. One of the follow-ups of your machine was the PB-220 ("Personal Computer"), a basic-capable calculator with a similar membrane keypad. as far as i remember it has 2k integrated ram, and accepts a single RP-8 extension which has another 8k for 10k total. the tokenized basic needs about one byte for most keywords.

the devices last more or less forever, the keys dont have the nice hp feeling but work precisely. the soft press makes number crunching fairly quick.

I made a usb-interface for the series a while ago, which pretends to be a cassette recorder and allows to SAVE and LOAD programs to the PC, so they can be edited on the computer instead of the tiny screen.