A look at the amazing construction techniques used in the world’s thinnest calculator by Casio
Destructive teardown on the Casio SL800 credit card calculator from 1983.
It’s more interesting than expected!
Forum HERE
Podcast: Download
The TOP 5 Jellybean 7440 and 4000 series logic chips. Forum: https://www.eevblog.com/forum/blog/eevblog-1611-top-5-jellybean-7400-4000-logic/ Schmitt Trigger video: …