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This option was designed for laptops and might not be available for all PCs. (For example, PCs with InstantGo don't have the hibernate option.) Hibernate uses less power than sleep and when you start up the PC again, you’re back to where you left off (though not as fast as sleep).

Use hibernation when you know that you won't use your laptop or tablet for an extended period and won't have an opportunity to charge the battery during that time. First check to see if this option is available on your PC and if it is, turn it on.

Source : microsoft.com

This option was designed for laptops and might not be available for all PCs. (For example, PCs with InstantGo don't have the hibernate option.) Hibernate uses less power than sleep and when you start up the PC again, you’re back to where you left off (though not as fast as sleep).

Use hibernation when you know that you won't use your laptop or tablet for an extended period and won't have an opportunity to charge the battery during that time. First check to see if this option is available on your PC and if it is, turn it on.

Source : microsoft.com

The category of operating system that you most likely have running on your PDA computer is a Single user, single task Operating system.

Multitasking, in an operating system, is allowing a user to perform more than one computer task (such as the operation of an application program) at a time. The operating system is able to keep track of where you are in these tasks and go from one to the other without losing information.

The computer saves the current state of the system from the computer's RAM to the hard disk, then shuts down. When the computer is restarted, instead of going through the typical boot sequence, the previously saved state is automatically loaded into the RAM. The open windows and running programs from your previous session appear just as they were when the computer entered Hibernate mode. Basically, Hibernate mode acts like Standby mode, except the computer can be completely turned off.

Source : techterms.com

The function of Dir/W is Displays only filenames and directory names (without the added information about each file) in a five-wide display format. Dir c:*. This form of the DIR command will also display directories. They can be identified by the DIR label that follows the directory name.

Page stealing is taking page frames from other working sets. When pure demand paging is used, pages are loaded only when they are referenced.

In Microsoft Windows, when you right-click a file and choose Properties, you are presented with the Properties dialog box. You can press Esc to cancel or close a dialog box. If the Esc key does not work, click the Cancel button or X button if available.

A dial-up connection is established when two or more communication devices use a public switched telephone network (PSTN) to connect to an Internet service provider (ISP).

The shut down button is located on the bottom-right side of the Start Menu. If you click on the arrow near Shut down, you can find other related options, all of which can be set as the default.