COMPLEX NUMBER CALCULATOR OPERATIONAL
January 8, 1940 - Bell Laboratories, U.S.A.
George Stibitz's Complex Number Calculator was functional. He was a research mathematician at Bell Laboratories, who worked on its construction from Apr 1939, assisted by Samuel Williams. Later known as Bell Labs Model I Relay Computer, it used telephone relays and coded decimal numbers as groups of four binary digits (bits) each. It has been called the first electromechanical computer for routine use. A demonstration of its ability in remote computing was given on 11 Sep 1940, when messages were exchanged by phone lines between teletypewriter operators. Calculations suggested by attendees of the American Mathematical Society's meeting at Dartmouth College, Hanover, New Hampshire were communicated to an attendant at the keyboard of Stibitz's calculator in New York.
BLACK AMERICAN INVENTION
January 8, 1872 - U.S.A.
A second U.S. patent was issued to Black American inventor Thomas Elkins for a new article of chamber furniture which he designated a "Chamber Commode" (No. 122,518). It provides a combination of "a bureau, mirror, book-rack, washstand, table, easy-chair, and earth-closet or chamber-stool," which might otherwise be constructed as several separate articles. Previously, a patent had been issued to Elkins on 22 Feb 1870 for a "Dining, Ironing Table and Quilting Frame Combined" (No. 100,020). Another patent was subsequently issued on 11 Apr 1879 for a "Refrigerating Apparatus" for "food or corpses," which provides a convenient container and method of chilling using the evaporation of water. (No. 221,222).
MEMBER LOGIN
RANDOM QUOTES
The Revolution
by John Adams
"...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."
No Man is Above the Law
by Theodore Roosevelt
"..."No man is above the law and no man is below it; nor do we ask any man's permission when we require him to obey it. Obedience to the law is demanded as a right; not asked as a favor."..."
RANDOM FACTS
Harvard Medical School
about Eyesight Myth and Fact
Myth: Staring at a computer screen all day is harmful to the eyes.
Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.
More vehicles
about Stolen On New Year's
More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)
Entertainment :
Choose Your Color :
Category Information : Entertainment
This is our Entertainment category. If you are interested in Entertainment, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Has grown into the largest supplier of live entertainment for weddings, corporate events and private parties in the UK. With over 90,000 previous customers and an artist roster of over 1750 bands, ...
The Finest Live Music, DJ/MC services, Specialty Entertainment and all other vendors for any event, party or wedding. We specialize in saving clients time and money with many packages and our full...
As recruitment specialists, Bis Henderson work with businesses to successfully hire supply chain, logistics and procurement professionals on a permanent and interim basis across professional, manag...
Drs. Richards and Miller care for a pediatric dental practice dedicated to providing dental care, education and community service to Lake County and surrounding areas.
Unfortunately just like humans our pets will age too. With the aging process comes health problems and with health problems comes very expensive vet bills. Research you dog