What is the first mechanical data processing devise used to and subtract?

What is the first mechanical data processing device used to add and subtract?
Jem_14
Asked Jul 18, 2013
The abacus.

https://en.wikipedia.org/wiki/Abacus
Rob
Answered Jul 18, 2013

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.

Categories