# Calculators

Free to read here, from Project Gutenberg.

3 titles; page 1 of 1.

- [The calculating engine](https://invisiblenetwork.ai/books/gutenberg/71292) by Charles Babbage
- [Origin of modern calculating machines](https://invisiblenetwork.ai/books/gutenberg/69386) by J. A. V. Turck
- [Histoire des nombres et de la numération mécanique](https://invisiblenetwork.ai/books/gutenberg/27936) by Jacomy-Régnier