In 1840 – Samuel F.B. Morse received a U.S. patent for “Improvement in the mode of communicating information by signals by the application of electro-magnetism.” We call it Morse code.

In 1963 – A hotline was established between the Soviet Union and the United States following the Cuban Missile Crisis. While later it would become the famous “red telephone” it started as a teletype.

In 2003 – The WikiMedia Foundation was founded in St. Petersburg, Florida by Jimmy Wales to oversee the various Wiki projects like Wikipedia.

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In 240 B.C. – Greek astronomer, geographer, mathematician and librarian in Alexandria, Eratosthenes calculated the Earth’s circumference. His data was based on the length of shadows in different locations and simple geometry, but his calculations were not far wrong.

In 1623 – Mathematician Blaise Pascal was born in France. He invented a digital calculator, the Pascaline, to help his father in his tax-collecting work.

In 2003 – Apple released dock connector-to-USB 2.0 cables and drivers for third-generation iPods. Previous iPods had been FireWire only.

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In 1908 – Scottish electrical engineer, Alan Archibald Campbell-Swinton, published a brief letter in the journal Nature, describing the essentials of making and receiving television images. He described using an electron gun in the neck of a cathode-ray tube to shoot electrons toward the flat end of the tube, which was coated with light-emitting phosphor. Others like Farnsworth and Baird would make just such devices years later.

In 2002 – Kevin Warwick had his chip removed. Warwick implanted the chip earlier that year in order to experiment with human-computer interaction, culminating in a direct connection to his wife.

In 2009 – The Lunar Reconnaissance Orbiter (LRO), a NASA robotic spacecraft was launched on its mission to collect information about the Moon, particularly around the poles.

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