QWERTY
The computer term QWERTY refers to the standard keyboard layout used for Latin-script alphabets. The name comes from the first six keys on the top row of the keyboard's letters: Q, W, E, R, T, and Y. This layout was originally developed for mechanical typewriters and has remained the dominant standard for computer keyboards.
History and purpose
Preventing jams on typewriters: The QWERTY layout was patented in 1878 by Christopher Lantham Sholes, who designed it to solve a mechanical problem. On early typewriters, if a typist struck keys in quick succession, the mechanical typebars would clash and jam. Sholes's design addressed this issue by placing common letter combinations, such as "th" or "st," farther apart to reduce the likelihood of jams and to allow the typebars enough time to fall back into place.
Persistence in the digital age: While the original mechanical reason for the layout is obsolete with modern keyboards, QWERTY's historical momentum has ensured its staying power. The widespread use of the layout meant that generations of typists learned on it, creating a powerful network effect that made it the default standard for computers, smartphones, and other devices.
Key characteristics
Non-alphabetical arrangement: The keys are not arranged alphabetically. Instead, they are positioned to encourage alternating between hands and to spread out common letter pairs.
Language variations: While the QWERTY name and basic layout are standard, adaptations exist for other languages. For example, French-speaking countries use an AZERTY layout, and German-speaking regions use a QWERTZ layout. These layouts modify the key arrangement to accommodate the specific linguistic needs of the users.
Row-staggered design: The rows of keys on a QWERTY keyboard are staggered, or offset, from one another. This design was a result of the mechanical linkages on old typewriters but has been retained in most modern electronic keyboards.
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