Sure Casio may have put out the world's first commercially marketed calculator but it wasn't the first number crunching machine.
In the mid 19th century an English mathematician developed the concept for a machine that could do mathematical calculations.
What he came up with was a 15 ton machine made up of 25,000 moving parts. Over the years, tech geeks and math lovers have tried to recreate the machine but the first one wasn't built until 2002 in London.
The second one was built in 2008 and it is on display at the Computer History Museum in Mountain View. Tech Reporter Scott Budman paid a visit to pay homage to the idea that is largely credited with spawning the first blueprint for a computer.