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Key rollover is the ability of a computer keyboard to correctly handle several simultaneous keystrokes. A keyboard with n-key rollover (NKRO) can correctly detect input from each key on the keyboard at the same time, regardless of how many other keys are also being pressed. Keyboards that lack full rollover will register an incorrect keystroke ...
Mouse keys is a feature of some graphical user interfaces that uses the keyboard (especially numeric keypad) as a pointing device (usually replacing a mouse). Its roots lie in the earliest days of visual editors when line and column navigation was controlled with arrow keys .
Alt+Space then S [notes 10] then Arrow Keys and ↵ Enter (to save new size) Alt+F3 then S then Arrow Keys: Alt+F8 then Arrow Keys / Alt+Right Mouse Button [notes 11] Ctrl+x, then ^ vertically Alt+] (snap window to right half of screen), Alt+[(snap window to left half of screen) Keep window always on top Ctrl+Alt+Esc (toggles on/off) Hide the ...
This variant adopted to newer games using mouse-look doesn't really need worry about the turn left and turn right keys. Instead S = strafe left, D = strafe right, A = backpedal, and space or F = forward. This is a more natural feel on the keyboard as your fingers rest on the home row. The comfort and usability points from ESDF apply here.
An early typewriter with a backspacer[sic] key.(Blickensderfer Model 7)Although the term "backspace" is the traditional name of the key which steps the carriage back and/or [note 3] deletes the previous character, typically to the left of the cursor, the actual key may be labeled in a variety of ways, for example delete, [1] erase, [note 4] or with a left pointing arrow. [3]
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.
Whereas Microsoft mice and Microsoft keyboards were previously controlled from two separate programs – IntelliPoint and IntelliType – the Mouse and Keyboard Center is responsible for both kinds of devices. 32- and 64-bit versions of the software are available, and the program integrates with Windows 8 and above's "Modern UI" interface.
A Control key (marked "Ctrl") on a Windows keyboard next to one style of a Windows key, followed in turn by an Alt key The rarely used ISO keyboard symbol for "Control". In computing, a Control keyCtrl is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, Ctrl+C).