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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.
The TouchPad has three separate physical buttons, a sleep/wake button on the top right, a home button at the bottom of the front that launches the card view or the app launcher and a set of volume rockers at the right of the device. Holding the power button and the home button together creates a screen snapshot.
IBM sold a mouse with a pointing stick in the location where a scroll wheel is common now. A pointing stick on a mid-1990s-era Toshiba laptop. The two buttons below the keyboard act as a computer mouse: the top button is used for left-clicking while the bottom button is used for right-clicking.
In addition to a wake-up press of the power button, PCs can also respond to other wake cues, such as from keyboard, mouse, incoming telephone call on a modem, or local area network signal. [citation needed] A real-time clock alarm can schedule the computer to wake from sleep mode. [1]
To communicate with the main computer system, several forms of communication can be used, including ACPI, SMBus, or shared memory. The embedded controller has its own RAM, independent of that used by the main computer system, and often its own flash ROM on which the controller's software is stored. Many BIOS updates also include upgrades for ...
Closeup of a touchpad on an Acer CB5-311 laptop Closeup of a touchpad on a MacBook 2015 laptop. A touchpad or trackpad is a type of pointing device.Its largest component is a tactile sensor: an electronic device with a flat surface, that detects the motion and position of a user's fingers, and translates them to 2D motion, to control a pointer in a graphical user interface on a computer screen.
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powerbutton put the machine to sleep when the power button pressed instead of shutting it down, 1 to enable or 0 to disable; powernap lets machine stay up to date even while they're sleeping, 1 to enable or 0 to disable; lidwake (laptop only) wake the machine when the laptop lid is opened, 1 to enable or 0 to disable