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Sleep mode (or suspend to RAM ) is a low power mode for electronic devices such as computers, televisions, and remote controlled devices. These modes save significantly on electrical consumption compared to leaving a device fully on and, upon resume, allow the user to avoid having to reissue instructions or to wait for a machine to boot . Many devices signify this power mode with a pulsed or red colored LED power light.

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32-464: The Apple menu is a drop-down menu that is on the left side of the menu bar in the classic Mac OS , macOS and A/UX operating systems . The Apple menu's role has changed throughout the history of Apple Inc. 's operating systems, but the menu has always featured a version of the Apple logo. In System 6.0.8 and earlier, the Apple menu featured a Control Panel, as well as Desk Accessories such as

64-645: A file , quitting a program , or manipulating data. Most widget toolkits provide some form of pull-down or pop-up menu . Pull-down menus are the type commonly used in menu bars (usually near the top of a window or screen), which are most often used for performing actions, whereas pop-up (or "fly-out") menus are more likely to be used for setting a value, and might appear anywhere in a window. According to traditional human interface guidelines, menu names were always supposed to be verbs , such as "file", "edit" and so on. This has been largely ignored in subsequent user interface developments. A single-word verb however

96-495: A menu is a list of options presented to the user . A user chooses an option from a menu by using an input device . Some input methods require linear navigation: the user must move a cursor or otherwise pass from one menu item to another until reaching the selection. On a computer terminal , a reverse video bar may serve as the cursor. Touch user interfaces and menus that accept codes to select menu options without navigation are two examples of non-linear interfaces. Some of

128-575: A power outage , unlike other operating systems, hibernate was never offered as an option. In 2005, some Macs running Mac OS X v10.4 began to support Safe Sleep. The feature saves the contents of volatile memory to the system hard disk each time the Mac enters Sleep mode. The Mac can instantaneously wake from sleep mode if power to the RAM has not been lost. However, if the power supply was interrupted, such as when removing batteries without an AC power connection,

160-526: A Calculator, the Scrapbook and Alarm Clock. If MultiFinder (an early implementation of computer multitasking ) was active, the Apple menu also allowed the user to switch between multiple running applications. The Macintosh user could add third-party Desk Accessories via the System Utility "Font/DA Mover". However, there was a limitation on the number of Desk Accessories that could be displayed in

192-491: A campaign was launched to add a set of power characters to Unicode . In February 2015, the proposal was accepted by Unicode and the characters were included in Unicode 9.0. The characters are in the " Miscellaneous Technical " block, with code points 23FB-FE. The symbol is ⏾ (⏾)—defined as "Power Sleep Symbol". Wake-on-LAN (WoL or WOL) is an Ethernet or Token Ring computer networking standard that allows

224-448: A combination of text and symbols to represent choices. By clicking on one of the symbols or text, the operator is selecting the instruction that the symbol represents. A context menu is a menu in which the choices presented to the operator are automatically modified according to the current context in which the operator is working. A common use of menus is to provide convenient access to various operations such as saving or opening

256-445: A computer to be turned on or awakened from sleep mode by a network message. It is based upon AMD 's Magic Packet Technology , which was co-developed by AMD and Hewlett-Packard, following its proposal as a standard in 1995. The standard saw quick adoption thereafter through IBM , Intel and others. Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. If

288-403: A minimum power state, just sufficient to retain its data. Because of the large power saving, most laptops automatically enter this mode when the computer is running on batteries and the lid is closed. If undesired, the behavior can be altered in the operating system settings of the computer. A computer must consume some energy while sleeping in order to power the RAM and to be able to respond to

320-455: A sleep state is roughly equivalent to "pausing" the state of the machine. When restored, the operation continues from the same point, having the same applications and files open. 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

352-430: A specific area. Other more recent electronics in the 2000s also have menus, such as digital media players . Menus are sometimes hierarchically organized, allowing navigation through different levels of the menu structure. Selecting a menu entry with an arrow will expand it, showing a second menu (the submenu) with options related to the selected entry. Usability of submenus has been criticized as difficult, because of

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384-573: A wake-up event. A sleeping PC is on standby power , and this is covered by regulations in many countries, for example in the United States limiting such power under the One Watt Initiative , from 2010. 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 . A real-time clock alarm can schedule

416-593: Is lost, it will use the hard disk to wake up. The user has the option of hibernating directly if they wish. On PCs that enable Modern Standby , Hybrid sleep feature is unavailable. In older versions prior to Windows Vista, sleep mode was under-used in business environments as it was difficult to enable organization-wide without resorting to third-party software. As a result, these earlier versions of Windows were criticized for wasting energy. A variety of third-party PC power management software exists for newer versions of Windows, offering features beyond those built into

448-458: Is referred to as "menu diving". In computer menu functions or buttons , an appended ellipsis ("…") means that upon selection, another dialog will follow, where the user can or must make a choice. If the ellipse is missing, the function will be executed upon selection. Displays with touchscreen functionality, e.g. modern cameras and printers, also have menus: these are not drop-down menus but buttons. Sleep mode In computers, entering

480-776: Is sometimes unclear, and so as to allow for multiple word menu names, the idea of a vertical menu was invented, as seen in NeXTSTEP . Menus are now also seen in consumer electronics , starting with TV sets and VCRs that gained on-screen displays in the early 1990s, and extending into computer monitors and DVD players . Menus allow the control of settings like tint , brightness , contrast , bass and treble , and other functions such as channel memory and closed captioning . Other electronics with text-only displays can also have menus, anything from business telephone systems with digital telephones, to weather radios that can be set to respond only to specific weather warnings in

512-401: Is the current standard for power management , superseding APM (Advanced Power Management) and providing the backbone for sleep and hibernation on modern computers. Sleep mode corresponds to ACPI mode S3 . 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

544-400: Is usually restricted to turning off the monitor and spinning down the hard drive. Microsoft Windows 2000 and later support sleep at the operating system level (ACPI S3 state) without special drivers from the hardware manufacturer, except of video adapters . Windows Vista 's Hybrid sleep feature saves the contents of volatile memory to hard disk before entering sleep mode. If power to memory

576-594: The Special menu have been merged into it. The Apple menu was missing entirely from the Mac OS X Public Beta , replaced by a nonfunctional Apple logo in the center of the menu bar, but the menu was restored in Mac OS X 10.0 . The quick file access feature implemented in System 7 was removed, although a third-party utility, Unsanity 's FruitMenu, restored the Apple menu to its classic functionality until it stopped working with

608-560: The Apple Menu, showing the contents of the folder or disk. Prior versions of System 7 showed only a standard menu entry that opened the folder in Finder. Apple Menu Options also added Recent Applications, Recent Documents, and Recent Servers to the Apple Menu; the user could specify the desired number of Recent Items. macOS (previously known as Mac OS X and OS X) features a completely redesigned Apple menu. System management functions from

640-696: The Apple menu. Third-party shareware packages such as OtherMenu added a second customizable menu (without the trademarked Apple logo) that allowed users to install Desk Accessories beyond Apple's limitations. System 7.0 introduced the Apple Menu Items folder in the System Folder . This allowed users to place alias(es) to their favorite software and documents in the menu. The Menu Manager forced these additions into alphabetical order, which prompted users to rename their aliases with leading spaces, numbers and other characters in order to get them into

672-785: The Mac would wake from Safe Sleep instead, restoring memory contents from the hard drive. Safe Sleep capability is found in Mac models starting with the October 2005 revision of the PowerBook G4 (Double-Layer SD ). Mac OS X v10.4 or higher is also required. In 2012, Apple introduced Power Nap with OS X Mountain Lion (10.8) and select Mac models. Power Nap allows the Mac to perform tasks silently, such as iCloud syncing and Spotlight indexing. Only low energy tasks are performed when on battery power, while higher energy tasks are performed with AC power. Because of widespread use of this symbol,

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704-625: The advent of OS 10.6 (Snow Leopard). The Apple menu is now dedicated to managing features of the Macintosh computer, with commands to get system information, update software , launch the Mac App Store , open System Preferences , set Dock preferences, set the location (network configuration), view recent items (applications, documents and servers), Force Quit applications, power management ( sleep , restart, shut down ), log out , etc. Menu (computing) In user interface design ,

736-627: The benefits of sleep mode and hibernation: The machine can resume instantaneously, but it can also be powered down completely (e.g. due to loss of power) without loss of data, because it is already effectively in a state of hibernation. This mode is called " hybrid sleep " in Microsoft Windows other than Windows XP. A hybrid mode is supported by some portable Apple Macintosh computers, compatible hardware running Windows Vista or newer, and Linux distributions running kernel 3.6 or newer. ACPI (Advanced Configuration and Power Interface)

768-484: The black logo found in previous versions. In System 7.0, the black logo was retained in grayscale modes, and was used when the Monitors control panel was set to display "Thousands" or "Millions" of grays, though the rest of the display was in color. System 7.0 featured built-in multitasking, so MultiFinder was removed as an option. The feature allowing users to switch between multiple running applications as in System 6

800-399: The computer to wake from sleep mode. Hibernation, also called Suspend to Disk on Linux, saves all computer operational data on the fixed disk before turning the computer off completely. On switching the computer back on, the computer is restored to its state prior to hibernation, with all programs and files open, and unsaved data intact. In contrast with standby mode, hibernation mode saves

832-411: The computer's state on the hard disk, which requires no power to maintain, whereas standby mode saves the computer's state in RAM, which requires a small amount of power to maintain. Sleep mode and hibernation can be combined: the contents of RAM are first copied to non-volatile storage like for regular hibernation, but then, instead of powering down, the computer enters sleep mode. This approach combines

864-450: The input devices used in menu interfaces are touchscreens , keyboards , mice , remote controls , and microphones. In a voice-activated system, such as interactive voice response , a microphone sends a recording of the user's voice to a speech recognition system, which translates it to a command. A computer using a command line interface may present a list of relevant commands with assigned short-cuts (digits, numbers or characters) on

896-459: The narrow height that must be crossed by the pointer . The steering law predicts that this movement will be slow, and any error in touching the boundaries of the parent menu entry will hide the submenu. Some techniques proposed to alleviate these errors are keeping the submenu open while moving the pointer in diagonal, and using mega menus designed to enhance scannability and categorization of its contents. Negative user experience with submenus

928-460: The operating system. Most products offer Active Directory integration and per-user/per-machine settings with the more advanced offering multiple power plans, scheduled power plans, anti-insomnia features and enterprise power usage reporting. Sleep on macOS consists of the traditional sleep, Safe Sleep , and Power Nap . In System Preferences , Safe Sleep is referred to as sleep. Since Safe Sleep also allowed state to be restored in an event of

960-485: The order that suited them the best. Several third-party utilities provided a level of customization of the order of the items added to the Apple menu without having to rename each item. The Apple menu also featured a Shut Down command, implemented by a Desk Accessory. An alias to the Control Panels folder was also present. System 7.0 was also the first version to feature the rainbow striped logo, as opposed to

992-459: The screen. Entering the appropriate short-cut selects a menu item. A more sophisticated solution offers navigation using the cursor keys or the mouse (even in two dimensions; then the menu items appear or disappear similarly to the menus common in GUIs). The current selection is highlighted and can be activated by pressing the enter key. A computer using a graphical user interface presents menus with

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1024-559: Was given its own menu (appearing as the icon of the active application) on the opposite side of the menubar. Beginning in Mac OS 8.5, this new menu was given a unique "tear-off" capability, which detached the menu from the menu bar to become a free-floating window when the user dragged the cursor downwards off the bottom of the menu. In this case, it ran the application called "Application Switcher". System 7.5 added an Apple Menu Options control panel, which added submenus to folders and disks in

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