On December 23, 1834, Charles Babbage announced the invention of the Analytical Engine.

According to London’s Science Museum:

The designs for the Analytical Engine include almost all the essential logical features of a modern electronic digital computer. The engine was programmable using punched cards. It had a “store” where numbers and intermediate results could be held and a separate “mill” where the arithmetic processing was performed. The separation of the “store” (memory) and “mill” (central processor) is a fundamental feature of the internal organisation of modern computers.

Wonder what he’d say if he could see a modern computer. Or even a hand calculator, for that matter.