, who introduced the division sign (the
, ÷) to England, died. 1894: American engineer
, who invented the
, was born. 1899: The first U.S. patent for a
was issued to George Grant. 1901: Guglielmo Marconi
, dit-dit-dit ("s"), using "Hertzian"
waves. 1921: Astronomer
Henrietta Swan Leavitt
, who discovered the relationship between
period and luminosity in Cepheid variables, died. 1927:
, co-inventor of the integrated circuit and nicknamed
"the Mayor of Silicon Valley", was born. 1961: The first satellite
put in orbit built by private citizens, the 10-lb
("Orbiting Satellite Carrying Amateur Radio") was launched.
1971: American communications pioneer and RCA's first general manager,
Computer Software Act of 1980
defined computer programs and
clarified extent of protection afforded software. 1994: IBM said
it would halt shipments of Pentium computers because of the "floating
" bug in the Pentium chip. 2005: RFMD was recognized as
Company of the Year
' by the NCTA. 2005:
announced that it would withdraw from the GSM handset
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
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. Many 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. Images used in the logos are often from open source websites
like Wikipedia, and are specifically credited with a hyperlink back to the source where
possible. Fair Use
laws permit small samples of copyrighted content.