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A dead key is a special kind of modifier key on a mechanical typewriter, or computer keyboard, that is typically used to attach a specific diacritic to a base letter. [1] The dead key does not generate a (complete) character by itself, but modifies the character generated by the key struck immediately after. Thus, a dedicated key is not needed ...
Notes: Dotted circle ( ) is used here to indicate a dead key. The ` key is the only one that acts as a free-standing dead key and thus does not respond as shown on the key-cap. All others are invoked by AltGr. AltGr+⇧ Shift+0 (°) is a degree sign; AltGr+⇧ Shift+M (º) is a masculine ordinal indicator. Dead keys
In computing, a modifier key is a special key (or combination) on a computer keyboard that temporarily modifies the normal action of another key when pressed together. By themselves, modifier keys usually do nothing; that is, pressing any of the ⇧ Shift, Alt, or Ctrl keys alone does not (generally) trigger any action from the computer.
On Sun Microsystems and Lisp machine keyboards, the Meta key is used as a modifier and for Windows keyboards, there is a Windows key. Compact keyboard layouts often use a Fn key. "Dead keys" allow placement of a diacritic mark, such as an accent, on the following letter (e.g., the Compose key).
Notes: Dotted circle ( ) is used here to indicate a dead key, invoked using AltGr. The ` (grave accent) key is the only one that acts as a free-standing dead key and thus does not respond as shown on the key-cap. (For a complete list of the characters generated using dead keys, see QWERTY#ChromeOS.)
The dead breve is hidden over the backslash AltGr+⇧ Shift+\ key. In the Portuguese keyboard, the dead tilde key, near the left shift key, has both the dead circumflex and the dead breve. On French and Belgian keyboards, the same dead key (the one right of p) used to produce French â ê î ô û ŷ when followed by a vowel will usually also ...
A typical 105-key computer keyboard, consisting of sections with different types of keys. A computer keyboard consists of alphanumeric or character keys for typing, modifier keys for altering the functions of other keys, [1] navigation keys for moving the text cursor on the screen, function keys and system command keys—such as Esc and Break—for special actions, and often a numeric keypad ...
PC keyboards designed for non-English use included other methods of inserting these characters, such as national keyboard layouts, the AltGr key or dead keys, but the Alt key was the only method of inserting some characters, and the only method that was the same on all machines, so it remained very popular.