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In general, ergonomic keyboards are designed to keep the user's arms and wrists in a near-neutral position, which means the slant angle (the lateral rotation angle for the keys in each half relative to the axis of the home row in a conventional keyboard) is approximately 10 to 12.5°, the slope (the angle of the keytop surfaces starting from the front edge closer to the user towards the top of ...
122-key, for PC/5250 emulators; produces standard 101-key scancodes mapped to standard keys with modifiers (e.g. F24 appears to the PC as Shift+F12) UNIZPHA Buckling spring 104 Yes No USB No Unicomp logo on LLP Unicomp ?-2014–Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), beige with light/dark beige keys, for Apple Mac OS
Microsoft designate them as Arabic (101) and Arabic (102). In both the number line is identical to the American layout, beside ( ) being mirrored, and not including the key to the left of 1. The \ key on the right side of the keyboard is also the same. | could also be produced by shifting the key on the left side of the keyboard.
Historically, the addition of two Windows keys and a menu key marked the change from the 101/102-key to 104/105-key layout for PC keyboards. [2] Compared to the former layout, a Windows key was placed between the left Ctrl and the left Alt and another Windows key and the menu key were placed between the right Alt (or AltGr) and the right Ctrl key.
Mechanical keyboards (or mechanical-switch keyboards) are computer keyboards which have an individual switch for each key. The following table is a compilation list of mechanical keyboard models, brands, and series:
The UK variant of the Enhanced keyboard commonly used with personal computers designed for Microsoft Windows differs from the US layout as follows: . The UK keyboard has 1 more key than the U.S. keyboard (UK=62, US=61, on the typewriter keys, 102 v 101 including function and other keys, 105 vs 104 on models with Windows keys)
IBM adopted the 101/102 key layout on the PS/2 in 1987 (after previously using an 84-key keyboard that did not have a separate cursor and numeric keypads). Most modern keyboards basically conform to the layout specifications contained in parts 1, 2, and 5 of the international standard series ISO/IEC 9995.
Modern keyboard models contain a set number of total keys according to their given standard, described as 101, 104, 105, etc. and sold as "Full-size" keyboards. [8] Modern keyboards matching US conventions typically have 104 keys while the 105 key layout is the norm in the rest of the world.