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The power key, or power button, is a key found on many computer keyboards during the 1980s and into the early 2000s. They were introduced on the first Apple Desktop Bus keyboards in the 1980s and have been a standard feature of many Macintosh keyboards since then.
In computing, a keyboard shortcut is a sequence or combination of keystrokes on a computer keyboard which invokes commands in software.. Most keyboard shortcuts require the user to press a single key or a sequence of keys one after the other.
With both types of mechanisms, if a CD or DVD is left in the drive after the computer is turned off, the disc cannot be ejected using the normal eject mechanism of the drive. However, tray-loading drives account for this situation by providing a small hole where one can insert a paperclip to manually open the drive tray to retrieve the disc. [39]
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.
The eject or start buttons for Dell MediaDirect stayed lit for a few minutes after the unit was powered on - resulting in a loss of functionality from the rest of the buttons. [17] Users have additionally reported issues with the Studio 1555 and Studio 1557's video cards. This was later found to be the effects of a video driver problem. [18] [19]
On Apple Macintosh computers with built-in 3½-inch disk drives, the ejection button is replaced by software controlling an ejection motor which only does so when the operating system no longer needs to access the drive. The user could drag the image of the floppy drive to the trash can on the desktop to eject the disk.
Playback controls on a CD player. Control symbols on a Sony Betamax Portable. In digital electronics, analogue electronics and entertainment, the user interface may include media controls, transport controls or player controls, to enact and change or adjust the process of video playback, audio playback, and alike.
In Classic Mac OS, dragging the disk icon to Trash (shortcut ⌘ Command+Y) directly ejected a disk (or CD) without leaving a grayed icon. [ 15 ] Mac OS X removed the transfer option; dragging a disk or storage volume onto Trash converted the icon to the universal Eject symbol before unmounting and ejecting the disk or volume.