A function is some programs that allows you to reverse the task (or last three tasks) most recently carried out. Go to the Edit menu and click on Undo.

To remove programs from the PC's hard disk. Software is available for uninstalling programs from available for uninstalling programs that do not contains an inbuilt uninstall option.

To improve the performance or specification of a PC by adding new hardware components such as a higher capacity disk drive. See Hardware.

Uniform Resource locator. A standard style used for all Internet address on the World Wide web the first part or the URL, such as www.siliguriinfoline.com, indicates the location of a computer on the Internet. Anything that follows, such as/myhome/mypage.htm, gives a location of a particular file on that computer.

Universal Serial Bus. A hardware connector that allows users to add devices such as mouse, modems and keyboards to a computer without having to restart.

Software that assists in certain computer functions, such as uninstalling and virus-scanning.