In 1981 – The first mouse integrated with a personal computer made its appearance with the Xerox Star workstation.

In 1995 – The Justice Department sued to block Microsoft’s purchase of Intuit, claiming the acquisition would raise prices and squash innovation. Intuit still exists but Microsoft Money is long gone.

In 1998 – Roughly 8,000 AOL subscribers joined the first known live interspecies chat with Koko the gorilla. Koko signed her answers; Penny Patterson interpreted them; and an AOL chat facilitator entered them in the computer.

In 1884 – The New York Times reported that “sending mails by electricity” was to be investigated by the Post Office Committee of the U.S. House, by providing for contracts with an existing telegraph company. It could lead to 10 cent telegrams!

In 1970 – The Convention Establishing the World Intellectual Property Organization entered into force.

In 1986 – Design flaws made worse by human error during a safety test, led to the worst nuclear disaster yet, and a partial meltdown at the Chernobyl Nuclear Plant.

In 1944 – Lt. Carter Harman of the 1st Air Commando Group rescued four men from the jungle in Burma Flying a Sikorsky YR-4 helicopter. It was the first combat rescue by helicopters in the U.S. Army Air Forces.

In 1953 – Watson and Crick’s presented their findings on the double helical structure of DNA in the publication Nature. They noted that the structure “suggests a possible copying mechanism for the genetic material.” 50 Years later the Human Genome Project had concluded sequencing the genome and published a follow-on in Nature on their vision for genetic research.

In 1961 – Robert Noyce received the US patent for the silicon-based integrated circuit. He went on to found the Intel Corporation with Gordon E. Moore in 1968. Noyce fought a long patent rights battle with Jack Kilby who invented a germanium based integrated circuit.

In 1970 – The Chang Zheng-1 rocket launched the first Chinese satellite, the Dong Fang Hong-1.

In 1981 – Apple introduced the portable Apple IIc. The machine came with 128 kilobytes of RAM and a 5 1/4 inch floppy disk drive.

In 1990 – The Space Shuttle Discovery launched with the Hubble Space Telescope on board. The following day, Hubble was released into space.

In 1827 – Mathematics student William Rowan Hamilton presented his “Theory of Systems of Rays” at the Royal Irish Academy in Dublin. It led to the development of the wave theory of light and led to the development of quantum mechanics.

In 1940 – A patent was granted to Herman Anthony for a leak-proof dry-cell battery. The patent was assigned to Ray-o-Vac.

In 2005 – At 8:27 PM, Jawed Karim, one of the co-founders of YouTube, uploaded the video “Me at the zoo” making it the first video ever to be uploaded to YouTube.

In 1592 – Wilhelm Schickard was born. He would grow up to create an early form of calculating machine called the “calculating clock”, that could add and subtract up to six-digit numbers.

In 1993 – NCSA Mosaic 1.0 was released, becoming the first web browser to achieve popularity among the general public.

In 2000 – The Big Number Change took place in the United Kingdom, changing how phone numbers were dialed in many areas. With the boom in mobile devices the UK had almost exhasuted all possible numbers, and needed the change to increase the pool of numbers to be assigned.

In 1962 – President John F. Kennedy opens the Seattle World’s fair by telephone from Palm Beach, Florida. He pressed a gold telegraph key which focused an antenna at Andover, Maine and a Navy radio telescope station in Maryland on a star to pick up a 10,000 year-old radio signal. That in turn set in motion various exhibits at the fair.

In 1964 – Satellite Transit-5BN-3 failed to reach orbit after launch. It dispersed 2.1 pounds (0.95 kg) of radioactive plutonium in its SNAP RTG power source.

In 1988 – Tandy Corp. held a press conference in New York to announce its plans to build IBM PS/2 clones.

In 1926 – Sam Warner approves the sound-on-disc system created by Western Electric and creates the Vitaphone company to develop the process to add sound to film.

In 1940 – Vladimir Zworykin and his team from RCA demonstrate the first electron microscope. It measured 10 feet high and weighed half a ton achieving a magnification of 100,000x.

In 1964 – The first AT&T picturephone transcontinental call was made between test displays at Disneyland and the New York World’s Fair.

In 1947 – A report appeared in Billboard magazine of the first public demonstration of the Jerry Fairbanks Zoomar lens. The National Broadcasting Company in New York City conducted the demo and the zoom lens soon became standard TV equipment.

In 1957 – The first non-test FORTRAN program ran at Westinghouse. It produced a missing comma diagnostic. A successful attempt followed.

In 1965 – “Cramming more components onto integrated circuits” by Gordon Moore was published in Electronics. Moore projected that over the next ten years the number of components per chip would double every 12 months. By 1975 he turned out to be right, and the doubling became immortalized as Moore’s law.

In 1925 – The first commercial radio facsimile transmission was sent from San Francisco, California to New York City. It was a photograph showing Louis B. Mayer presenting Marion Davies with a gift.

In 1930 – BBC Radio made the startling announcement that nothing terribly important had happened. Listeners who tuned in to hear the news bulletin were told, “There is no news.” Piano music began subsequently.

In 1986 – Newspapers reported that IBM had become the first to use a megabit chip, a memory chip capable of storing 1 million bits of information, in its Model 3090.