In 1833 – Ada Gordon, daughter of Lord Byron (and future Countess Lovelace) met Charles Babbage for the first time. He designed an early computer, and she published a description of his work and wrote the first computer program.

In 1977 – The Apple II went on sale. It had a bus speed of 1 MHz and 64 KB of memory.

In 2002 – Mozilla.org announced the release of Mozilla 1.0, an open-source browser built on the Gecko engine that also powered Netscape.

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In 1903 – In one of the earliest examples of white hat hacking, Nevil Maskelyne interrupted a demonstration of the Marconi radio communications system at the Royal Institution, London. Before Marconi’s message from Poldhu, Cornwall could arrive, Maskelyne hijacked the signal sending the word “rats” repeatedly and then the phrases, “There was a young fellow of Italy, who diddled the public quite prettily.”

In 1977 – JVC introduced the open standard for the VHS videocassette in North America at a press conference before the Consumer Electronics Show in Chicago.

In 2010 – Falcon 9 Flight 1 launched the maiden flight of the SpaceX Falcon 9 rocket, setting a new benchmark for non-governmental space flight. The rocket put a dummy payload into orbit as a test.

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In 1889 – The first long-distance transmission of electricity took place, sending power from a hydroelectric generator at Willamette Falls 14 miles west to 55 street lights at 4th and Main in Portland, Oregon.

In 1948 – Ed Brown Jr., a former Navy pilot, opened a fly-in movie theater near Wall Township, New Jersey. You could also drive in. The theater had space for 500 cars and 25 small planes could land in a nearby airfield and taxi over to the theater.

In 1965 – Gemini 4 launched on the first multi-day space mission by a NASA crew. Crew-member Ed White performed the first US spacewalk.

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In 1883 – Thomas Edison and Stephen D. Field built the world’s first elevated electric railway. It was a narrow-gauge 3-foot-wide track in the gallery around the edge of the main exhibition building of the Chicago Railway Exhibition. It ran nine miles per hour.

In 1896 – Guglielmo Marconi applied for British Patent number 12039 regarding a system of telegraphy using Hertzian waves. We’d call it radio.

In 2003 – The European Space Agency launched the Mars Express probe from the Baikonur space center in Kazakhstan. It was the fastest planetary probe to be built.

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In 1890 – The U.S. Census Bureau began using Herman Hollerith’s tabulating machine for the first time. This gave Hollerith the basis to later found his Tabulating Machine Company, which was one of four companies that merged to form IBM.

In 1944 – The Colossus Mark 2 was put into service at Bletchley Park in Great Britain, just in time for the invasion at Normandy.

In 1999 – The Windows version of music-sharing program Napster was released.

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