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  2. Busy waiting - Wikipedia

    en.wikipedia.org/wiki/Busy_waiting

    In computer science and software engineering, busy-waiting, busy-looping or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as whether keyboard input or a lock is available. Spinning can also be used to generate an arbitrary time delay, a technique that was necessary on systems that lacked a ...

  3. Hibernation (computing) - Wikipedia

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

    Windows Vista introduced a hybrid sleep feature, which saves the contents of memory to hard disk but instead of powering down, enters sleep mode. If the power is lost, the computer can resume as if hibernated. Windows 7 introduced compression to the hibernation file and set the default size to 75% of the total physical memory. [18]

  4. Windows 11 - Wikipedia

    en.wikipedia.org/wiki/Windows_11

    As of November 2024, Windows 11, accounting for 35% of Windows installations worldwide, [185] is the second most popular Windows version in use, with its predecessor Windows 10 still being the most used version in virtually all countries (with Guyana being an exception, where Windows 11 is the most used [186]), having over 2 times the market ...

  5. Spinlock - Wikipedia

    en.wikipedia.org/wiki/Spinlock

    ; Intel syntax locked:; The lock variable. 1 = locked, 0 = unlocked. dd 0 spin_lock: mov eax, 1; Set the EAX register to 1. xchg eax, [locked]; Atomically swap the EAX register with; the lock variable.; This will always store 1 to the lock, leaving; the previous value in the EAX register. test eax, eax; Test EAX with itself.

  6. ACPI - Wikipedia

    en.wikipedia.org/wiki/ACPI

    The "It's now safe to turn off your computer" screen in Windows NT 4.0. Unlike Windows 9x and later NT releases, most of the essential computer peripherals are working normally, so the user can opt to restart instead of powering off their computer. The "It's now safe to power off the system" screen in Windows 10 and 11.

  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. System Locked Pre-installation - Wikipedia

    en.wikipedia.org/wiki/System_Locked_Pre-installation

    System Locked Pre-installation (SLP), also referred to as OEM Activation, is a product activation procedure for Microsoft Windows used by major OEMs of laptops and pre-built PCs wherein a Windows product key is added and locked to the machine's firmware before mass distribution. SLP product keys cannot be moved to other machines.

  9. Sleep (system call) - Wikipedia

    en.wikipedia.org/wiki/Sleep_(system_call)

    On Windows, the Sleep() function takes a single parameter of the number of milliseconds to sleep. The Sleep() function is included in kernel32.dll. [1]The Sleep() function has a resolution no higher than the current timer resolution, typically 16ms but at minimum 1ms, adjustable via the timeBeginPeriod() family of "media timer" APIs.

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