Thursday, 17 November 2011

QWERTY KEYBOARD HISTORY

 QWERTY KEYBOARD HISTORY


In 1875, Christopher Sholes with assistance from Amos Densmore  rearranged the typewriter keyboard so that the commonest letters were not so close together and the type bars would come from opposite directions. Thus they would not clash together and jam the machine. The new arrangement was the "QWERTY" arrangement that typists use today.



Invention:"QWERTY" keyboard
QWERTY keyboard image © Vaunt Design Group
Function:name /  QWER·TY
Definition:A standard typewriter keyboard -- called also QWERTY keyboard . Name derived from the first six letters in the second row on English language computer and typewriter keyboards.
Patent:207,559 (US) issued August 27, 1878
Inventor:Christopher Latham Sholes
Christopher Sholes image courtesy National Inventors Hall of Fame
Criteria;First practical.
Birth:February 14, 1819 in Mooresburg, Pennsylvania
Death:February 17, 1890 in  Milwaukee, Wisconsin
Nationality:American

The Story:
Look at the keyboard of any standard typewriter or computer. "Q,W,E,R,T and Y" are the first six letters. Who decided on this arrangement of the letters? And why?

The first practical typewriter was patented in the United States in 1868 by Christopher Latham Sholes. His machine was known as the type-writer. It had a movable carriage, a lever for turning paper from line to line, and a keyboard on which the letters were arranged in alphabetical order.

But Sholes had a problem. On his first model, his "ABC" key arrangement caused the keys to jam when the typist worked quickly. Sholes didn't know how to keep the keys from sticking, so his solution was to keep the typist from typing too fast.


He did this using a study of letter-pair frequency prepared by educator Amos Densmore, brother of James Densmore, who was Sholes' chief financial backer. The QWERTY keyboard itself was determined by the existing mechanical linkages of the typebars inside the machine to the keys on the outside. Sholes' solution did not eliminate the problem completely, but it was greatly reduced.
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The keyboard arrangement was considered important enough to be included on Sholes' patent granted in 1878, some years after the machine was into production. QWERTY's effect, by reducing those annoying clashes, was to speed up typing rather than slow it down.

The new arrangement was the "QWERTY" arrangement that typists use today. Of course, Sholes claimed that the new arrangement was scientific and would add speed and efficiency. The only efficiency it added was to slow the typist down, since almost any word in the English language required the typist's fingers to cover more distance on the keyboard.

The advantages of the typewriter outweighed the disadvantages of the keyboard. Typists memorized the crazy letter arrangement, and the typewriter became a huge success.

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