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A QWERTY keyboard layout with the position of Control, Alt and Delete keys highlighted. Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del and sometimes called the "three-finger salute" or "Security Keys") [1] [2] is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete.
Ctrl+Alt+Print Screen: Save screenshot of window as file ⇧ Shift+⌘ Cmd+4 then Space then move mouse and click: Alt+Print Screen : Ctrl+Alt+Show Windows then move mouse and click Copy screenshot of window to clipboard Ctrl+⇧ Shift+⌘ Cmd+4 then Space then move mouse and click: Alt+Print Screen : Ctrl+Alt+Show Windows then move mouse and click
A Super key, located between the Control key and the Alt key, on an ISO style PC keyboard. Super key ( ) is an alternative name for what is commonly labelled as the Windows key [1] or Command key [2] on modern keyboards, typically bound and handled as such by Linux and BSD operating systems and software today.
The Alt key is well known as part of the key combinations: Ctrl+Alt+Delete may restart the computer (its original function); in some operating systems it brings up a task manager - see Control-Alt-Delete. Alt+⌘ Cmd+Esc (often referred to as ⌘ Cmd+⌥ Opt+Esc.) brings up the Force Quit window in Apple's macOS, see Option key.
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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).
The key combination consists of Alt+SysRq and another key, which controls the command issued. SysRq may be released before pressing the command key, as long as Alt remains held down. The combinations always assume the QWERTY keyboard layout; [ citation needed ] for example, on the Dvorak keyboard layout , the combination to shut down the system ...
David J. Bradley (born 4 January 1949) is one of the twelve engineers who worked on the original IBM PC, developing the computer's ROM BIOS code. Bradley is credited for implementing the "Control-Alt-Delete" (Ctrl-Alt-Del) key combination that was used to reboot the computer.