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The History of Computer Science

Explore the discoveries, inventions, and milestones that shaped computer science and the digital age. Discover early computing machines, programming languages, algorithms, artificial intelligence, computer networks, and other breakthroughs that transformed how information is processed, stored, communicated, and used in science, business, government, and everyday life.

Major Historical Events in Computer Science

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📅 Sep 9, 1947

A Moth Is Found in the Harvard Mark II Computer

On September 9, 1947, a moth found in a relay of the Harvard Mark II became the first documented computer bug.

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📅 Oct 28, 1955

Bill Gates Is Born in Seattle

On October 28, 1955, Bill Gates, who founded Microsoft and later set up a large philanthropic foundation, was born in Seattle.

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📅 Sep 12, 1958

Jack Kilby Builds the First Working Integrated Circuit

On September 12, 1958, Jack Kilby ran the first working integrated circuit, putting every component on one piece of semiconductor.

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📅 Oct 29, 1969

The First Network Link Is Made

On October 29, 1969, ARPANET sent its first message between two computers, the seed of the internet.

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📅 Sep 3, 1995

Pierre Omidyar Launches AuctionWeb, the Site That Became eBay

On September 3, 1995, Pierre Omidyar launched AuctionWeb in San Jose, a site renamed eBay two years later that changed online selling.

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📅 Sep 4, 1998

Google Is Incorporated by Larry Page and Sergey Brin

On September 4, 1998, Larry Page and Sergey Brin incorporated Google in California, built around the PageRank link algorithm.