Not a complete history by any means, but serves as a quick filler presentation for a STEM workshop my library is hosting in July 2014.

An instrument for performing calculations by sliding counters along rods or in grooves.

A manual device used for calculation that consists in its simple form of a ruler and a movable middle piece. Used for multiplication, division, and logarithms.

A mechanical calculator built by Blaise Pascal, a 17th century mathematician, for whom the Pascal computer programming language was named.

A loom programmed with punched cards invented by Joseph Marie Jacquard.

Invented by Charles Babbage. The Analytical Engine marks the transition from mechanized arithmetic to general purpose computation.

The first electronic general-purpose computer. Funded by the US Army, it was completed shortly after World War II.

Invented by Doug Englebert, the first mouse was build from a block of wood.

The Advanced Research Projects Agency Networkw was one of the first packet switching networks and the precursor to the Internet we use today.

The Kembak-1. Advertised for $750 in Scientific American, only 40 machines were ever built and sold. It was programmed with buttons and switches and output was given using lights.

The first mass-market PC to feature a GUI and mouse.

Tim Berners-Lee wrote the proposal for what would become the World Wide Web on March 12, 1989.

The IBM Simon (not pictured) was the first phone to include both telephone and PDA features.