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Power-on self-test. A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. [1] POST processes may set the initial state of the device from firmware and detect if any hardware components are non-functional.
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.
Scrolling Lock – Scroll Lock. In some applications, such as spreadsheets, the lock mode is used to change the behavior of the cursor keys to scroll the document instead of the cursor. Usually located to the right of the function keys. Some laptops and compact keyboards also have a Function Lock - FN Lock. On these devices, a Fn modifier key ...
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.
Normal capitalization rules apply with respect to Shift and Caps Lock keys. For example, to enter "Ź", one can type ⇧ Shift+AltGr+X with Caps Lock off, or turn on Caps Lock and type AltGr+X. Both ANSI [29] and ISO [30] mechanical layouts are common sights, and even some non-standard [31] mechanical layouts are in use.
A common test for whether the computer has crashed is pressing the "caps lock" key. 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 ...
For example, in most keyboard layouts the Shift key combination ⇧ Shift+A will produce a capital letter "A" instead of the default lower-case letter "a" (unless in Caps Lock or Shift lock mode). A combination of Alt + F4 in Microsoft Windows will trigger the shortcut for closing the active window ; in this instance, Alt is the modifier key.
The Fn key is a form of meta-modifier key, in that it causes the operating system to see altered scancodes when other keys on the keyboard are pressed. This allows the keyboard to directly emulate a full-sized keyboard, so the operating system can use standard keymaps designed for a full-sized keyboard. However, because the operating system has ...