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2. Power key - Wikipedia

   en.wikipedia.org/wiki/Power_key

   This multifunction keyboard has separate keys for sleep, wake and power on/off. On PC keyboards, power keys were often based on rubber mechanisms, like this Yahoo-branded example. Early Windows PCs generally lacked the ability to control power through software, and power keys were not physically possible. The increasing use of USB connections ...

3. Spinlock - Wikipedia

   en.wikipedia.org/wiki/Spinlock

   A few multi-core processors have a "power-conscious spin-lock" instruction that puts a processor to sleep, then wakes it up on the next cycle after the lock is freed. A spin-lock using such instructions is more efficient and uses less energy than spin locks with or without a back-off loop.

4. Lock (computer science) - Wikipedia

   en.wikipedia.org/wiki/Lock_(computer_science)

   Before being introduced to lock granularity, one needs to understand three concepts about locks: lock overhead: the extra resources for using locks, like the memory space allocated for locks, the CPU time to initialize and destroy locks, and the time for acquiring or releasing locks. The more locks a program uses, the more overhead associated ...

5. Save All Around by Powering Your Computer Down -- Savings ...

   www.aol.com/news/2012-10-19-computer-sleep-mode...

   The sleep mode on your computer is designed to keep the machine on while drawing a small amount of power. This only costs about $50 more per year on your electric bill, which seems low, but the ...

6. Table of keyboard shortcuts - Wikipedia

   en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

   Place computer into sleep/standby mode Windows 10: ⊞ Win+x > u > s. Windows 7: ⊞ Win+→+→+↵ Enter. Sleep (available on some keyboards) ⌥ Opt+⌘ Cmd+Eject: Sleep (available on some keyboards, configurable in Control Panel Power Options Advanced tab dialog box) Shut down computer Windows 10: ⊞ Win+x > u > u: Ctrl+⌥ Opt+⌘ Cmd+Eject

7. Sleep mode - Wikipedia

   en.wikipedia.org/wiki/Sleep_mode

   Sleep mode has gone by various names, including Stand By, Suspend and Suspend to RAM. Machine state is held in RAM and, when placed in sleep mode, the computer cuts power to unneeded subsystems and places the RAM into a minimum power state, just sufficient to retain its data. Because of the large power saving, most laptops automatically enter ...

8. ACPI - Wikipedia

   en.wikipedia.org/wiki/ACPI

   Advanced Configuration and Power Interface (ACPI) is an open standard that operating systems can use to discover and configure computer hardware components, to perform power management (e.g. putting unused hardware components to sleep), auto configuration (e.g. Plug and Play and hot swapping), and status monitoring.

9. Hibernation (computing) - Wikipedia

   en.wikipedia.org/wiki/Hibernation_(computing)

   Hibernation (also known as suspend to disk, or Safe Sleep on Macintosh computers [1]) in computing is powering down a computer while retaining its state. When hibernation begins, the computer saves the contents of its random access memory (RAM) to a hard disk or other non-volatile storage. When the computer is turned on the RAM is restored and ...