![]() From there, the series of scan codes is converted into a character stream by keyboard layout software. Most computer keyboards are designed to send scan codes to the operating system, rather than directly sending characters. There are also function keys, with various functions as determined by software. caps lock, control and alternative ( alt) keys, are called modifier keys. The shift and Alt Gr or option keys, along with e.g. On the visual layout, the secondary symbols may appear to the right of the main symbols engraved on the keys, or they may be unmarked. It can be used to type symbols beyond the two otherwise available with each key. Therefore, keyboards often have what is effectively a secondary shift key, labeled Alt Gr or option. Many languages use the Latin alphabet but have diacritically marked or other special letters and punctuation for which unique keys do not exist on all keyboards. The shift key is also used to type the upper of two symbols on a given key, the lower being typed without using the shift key. 6 Keyboard layouts for non-Latin alphabetic scriptsĪ key labeled with only a single letter (usually the capital form) can generally be struck to type either a lower case or a capital letter, the latter requiring the simultaneous holding of the shift key, often labeled "⇧".5.8 Other original layouts and layout design software.5.7 Chorded keyboards and mobile devices.5 Non-QWERTY keyboards for Latin scripts.4.2.7 Switzerland(German, French, Italian, Romansh), Liechtenstein, Luxembourg.4.2.5 Bosnian, Croatian, Serbian Latin and Slovene.4.2.3 Germany and Austria (but not Switzerland). ![]() 4.1.26.3 US-International in the Netherlands.4.1.20 Spanish (Spain), aka Spanish (International sort).4.1.18 Romanian (in Romania and Moldova).4 QWERTY based layouts for Latin script.3 Mechanical, visual and functional layouts.
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