cactuswatcher (![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
cactuswatcher) wrote2016-02-24 10:19 am
cactuswatcher) wrote2016-02-24 10:19 am
A 100+ year-old portable calculator
For those of us geeks born before the hand-held calculator this is fascinating. By the time I was around, IBM had *manual* business calculating machines that would do all this that sat on a smaller desk. By all accounts they were much noisier than this older model.