In 1922 – Scientists at the Naval Aircraft Radio Laboratory near Washington, DC, demonstrated radar by showing that if a ship passed through a radio wave broadcast between two stations, that ship could be detected.

In 1983 – Richard Stallman announced the GNU project which aimed at the time to develop a free Unix-like operating system.

In 1996 – Kevin Mitnick was indicted on charges he broke into the systems of major software companies, then transferred stolen material to computers at USC via the Internet. Seems prosaic today, but was unheard of at the time.

In 1960 – For the first time, a US presidential debate was televised. Vice President Nixon and Senator Kennedy debated in Chicago and were perceived differently by those who listened on radio versus those who watched on television.

In 1983 – 17-year-old Neal Patrick, of the hacking group 414s testified before the U.S. House of Representatives about computer break-ins and how they might be stopped.

In 1991 – Eight people entered Biosphere 2, an airtight replica of the Earth’s biosphere in Oracle, Arizona. They left exactly two years later in 1993. Results of the experiment are still controversial.

In 1956 – The first submarine transatlantic telephone cable system, TAT-1 was inaugurated, replacing slow telegraph and unreliable radio systems.

In 2001 – Apple announced the release of Mac OS X 10.1 Puma, the first major upgrade to OS X.

In 2012 – Blizzard launched its 4th World of Warcraft expansion, called Mists of Pandaria.

1979: CompuServe began offering a consumer version of its dial-up online information service called MicroNET. The name would later be changed to CompuServe and offer public email among other online services.

In 1993 – Broderbund Software released the game Myst, for the Macintosh computer. It became a record-setting bestseller and helped popularize CD-ROM drives.

In 1997 – Ultima Online launched, revolutionizing online gaming by supporting thousands of simultaneous players in a persistent shared world.

In 1889 – Fusajiro Yamauchi founded Nintendo Koppai in Kyoto, Japan, to manufacture hanafuda, Japanese playing cards. Mario came much later.

In 1999 – NASA lost contact with the Mars Climate Orbiter. It began orbit normally, but after it went behind the planet and out of range, it never made contact again. It was later determined that the approach attitude was wrong because software put out imperial units instead of metric units.

In 2002 – Mozilla Phoenix 0.1 was released. It was the first public version of the web browser without mail or web editor, which would become Mozilla Firefox.

In 2008 – The T-Mobile G1 launched, the first phone to use Google’s Android OS, as it began it’s competition against the barely year-old iPhone.