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History. Typewriters are the definitive ancestor of all key-based text entry devices, but the computer keyboard as a device for electromechanical data entry and communication largely comes from the utility of two devices: teleprinters (or teletypes) and keypunches. It was through such devices that modern computer keyboards inherited their layouts.
The Alt key Alt (pronounced / ɔːlt / AWLT or / ʌlt / ULT) on a computer keyboard is used to change (alternate) the function of other pressed keys. Thus, the Alt key is a modifier key, used in a similar fashion to the Shift key. For example, simply pressing A will type the letter 'a', but holding down the Alt key while pressing A will cause ...
For instance, typing on a conventional keyboard layout can force the user into shoulder elevation, wrist ulnar deviation, and head rotation. [4]: 385 Consideration of physical ergonomics suggests the most relaxed typing position is one in which the keyboard user's forearms are parallel to the ground, with wrists held straight. To facilitate ...
v. t. e. The ThinkPad X series is a line of laptop computers and convertible tablets produced by Lenovo with less power than its other counterparts. It was initially produced by IBM until 2005. IBM announced the ThinkPad X series (initially the X20) in September 2000 with the intention of providing "workers on the move with a better experience ...
The new E540 includes new Intel 4th Gen Core (Haswell-MB) processors, 1920x1080 FHD Screen options, and Nvidia Graphics. The ThinkPad Edge E545 was released in 2013, as an update to the ThinkPad Edge E535. The new E545 includes new AMD Richland Series APUs and AMD Graphics. Model. Dimensions (mm) Weight (min) CPU.
Dvorak keyboard layout. Dvorak / ˈdvɔːræk / ⓘ [ 1 ] is a keyboard layout for English patented in 1936 by August Dvorak and his brother-in-law, William Dealey, as a faster and more ergonomic alternative to the QWERTY layout (the de facto standard keyboard layout). Dvorak proponents claim that it requires less finger motion [ 2 ] and as a ...
A pointing stick (or trackpoint, also referred to generically as a nub or nipple) is a small analog stick used as a pointing device typically mounted centrally in a computer keyboard. Like other pointing devices such as mice, touchpads or trackballs, operating system software translates manipulation of the device into movements of the pointer ...
Original IBM keyboard design (1992–2012) — The original keyboard offered in the ThinkPad line until 2012, when it was swapped out for the chiclet style keyboard now used today. IBM TrackWrite keyboard design — A unique keyboard designed by John Karidis introduced by IBM in 1995, used in the ThinkPad 701 series.