- Sleep mode
Sleep mode refers to a low power mode for electronic devices such as computers, televisions, and remote controlled devices. These modes save significant electrical consumption compared to leaving a device fully on and idle but allow the user to avoid having to reset programming codes or wait for a machine to reboot. Many devices signify this power mode by a pulsing led power light.
Sleep mode can go by many different names including stand-by (Windows), deep sleep (Mac) and suspend (Linux). When placed in this Sleep mode, aside from the RAM which is required to restore the machine's state, the computer attempts to cut power to all unneeded parts of the machine. Because of the large power savings, most laptops automatically enter this mode when the lid is closed.
Though generally thought as two separate functions, modern Macintoshes and some specially configured
Linuxmachines also feature a variation of Sleep mode that incorporates the strengths of hibernate. The RAM is copied to the hard drive before sleep mode is initiated, allowing for safety from power failure and instant-on at the same time.
ACPI is the current standard for
power management, superseding APM and providing the backbone for sleep and hibernation on modern computers. When a non-ACPI device is plugged in, Windows will sometimes disable stand-by functionality for the whole operating system. Without ACPI functionality, as seen on older hardware, sleep mode is usually restricted to turning off the monitor and spinning down the hard drive.
Stand-by mode may affect equipment lifetime. Stand-by mode may reduce the thermal cycles of key components, therefore possibly improving the equipment reliability. [cite paper
title = About thermal cycles :"Overclocking's Impact on CPU Life "
url = http://www.overclockers.com/tips30/
accessdate = 2007-08-09] debatable This means equipment might last longer, so less electronic equipment will be scrapped. On the other hand, equipment in standby mode is at increased risk of damage from power surges, so stand-by may also shorten equipment lifetimes.Fact|date=July 2008
One Watt InitiativeLinux implementations of Sleep/Suspend/Hibernate
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Look at other dictionaries:
sleep mode — noun (computing) The facility of temporarily restricting electrical power in a computer to those parts that are needed to restore it to full operation, so that it can be left switched on when not in use • • • Main Entry: ↑sleep * * * n.… … Useful english dictionary
Sleep Mode — [engl.], Schlafmodus … Universal-Lexikon
sleep mode — /ˈslip moʊd/ (say sleep mohd) noun a low power mode for electronic devices as computers, radios, mobile phones, etc., which saves power consumption but avoids having to turn the device completely off: *it could be switched off to sleep mode when… … Australian English dictionary
sleep mode — miego būsena statusas T sritis informatika apibrėžtis Galios valdymo būsena, kurios metu nutraukiamos visos nebūtinos kompiuterio operacijos, kad būtų taupoma elektros energija. Miego būsenoje esantis kompiuteris paprastai „pabunda“ gavęs… … Enciklopedinis kompiuterijos žodynas
sleep mode — noun the state of a computer system (especially a laptop), in which the screen and hard drive are switched off, and the only task running monitors external … Wiktionary
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mode — noun ADJECTIVE ▪ normal, traditional, usual ▪ preferred ▪ Walking was his preferred mode of travel. ▪ default ▪ … Collocations dictionary
sleep — [c]/slip / (say sleep) verb (slept, sleeping) –verb (i) 1. to take the repose or rest afforded by a suspension of the voluntary exercise of the bodily functions and the natural suspension, complete or partial, of consciousness. 2. to be dormant,… … Australian English dictionary
Sleep (operating system) — A computer program (process or task) may sleep, which places it into an inactive state for a period of time. Eventually the expiration of an interval timer, or the receipt of a signal or interrupt causes the program to resume execution.A typical… … Wikipedia
sleep button — /ˈslip bʌtn/ (say sleep butn) noun 1. a button on a radio or television which activates the sleep setting. See sleep (def. 12). 2. a button on a device such as a mobile phone or computer which activates sleep mode … Australian English dictionary