The '
Retro Thing' weblog has quite a lot of interesting articles. A recent one features
a very early digital synth produced by Casio which doubles as a calculator. The article says that these (and the CZ-1000) come up on eBay quite a bit so here are two links to check it out.
NOTE When I tried this at the end of February I did find half-a-dozen items but there's no guarantee there will be any for sale when you try this out.
