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Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

Day in Engineering History Archive - November 15

November 15

Intel Introduced the 4004 Microprocessor - RF Cafe

1630: German astronomer Johannes Kepler, who formulated the three major laws of planetary motion, died. 1806: Explorer Zebulon Pike sighted the mountaintop in Colorado now known as "Pikes Peak." 1887: German scientist Carl Gassner was issued a patent for the first "galvanic battery," or  dry cell, which used zinc as its primary ingredient. 1819: Scottish chemist Daniel Rutherford, who discovered nitrogen, died. 1904: Patent #775,134 was granted to King Gillette for the safety razor. 1965: American engineer Allen Du Mont, who invented the first commercial cathode ray tube, died. 1971: Intel announced its first user-programmable microprocessor, the 4004, in a edition of Electronic News magazine. 1988: The Soviet Union launched its first space shuttle, Buran ("Snowstorm"), unmanned, on its first and only orbital flight. 2000: The Southern Cross broadband cable went into service, connecting Australia, New Zealand, Fiji, Hawaii and the U.S. west coast over a distance of 30,500 km.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-) A couple years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred.

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Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

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