of the arrows to scroll the information into view.

scroll mouse A mouse with a scroll wheel (between the two mouse buttons) for automatic scrolling through long documents or Web pages.

search engine A program, accessed on the Internet, that allows you to search large databases for information, using keywords or phrases. See also database.

secure Web site A Web site that encrypts data to protect it from unauthorised use. When you purchase items over the Internet, you are asked to type your name, mailing address, e-mail address, and credit card information on an electronic form. Sending information to a secure Web site is comparable to giving it over the telephone when you order from a catalogue. (But never send your social security number over the Internet. Criminals can steal your identity with your social security number.) See also encrypt.

serial port A small connector on the back of the computer (or keyboard) for plugging in a thin cable attached to a serial device, such as a mouse. Serial devices transfer data, one bit at a time, through a data wire. The serial cable has two wires for bidirectional communication (sending and receiving information simultaneously). See also digital. See also parallel port.

shareware Software you can try before you buy. After a trial period, usually 30 days, the program uninstalls unless you pay for it You can download shareware from the Internet. See also software.

GLOSSARY-12

shortcut An icon on the Windows desktop that you double-click to launch a program.

shortcut menu A menu that pops up when you right-click an icon on the Windows desktop or taskbar, the vacant part of the desktop, a selection in a document, or a file in Windows Explorer. The options on the pop-up menu are the most commonly used commands that relate to the item you right-clicked. See also right-click.

sleep mode A low-power state that saves electricity when the computer is not in use.

software The invisible code stored in digital bits and bytes. It consists of a set of instructions that tell the hardware what tasks to perform. See also digital. See also program.

surf To jump from place to place on the Internet, searching for topics of interest, by clicking hyperlinks. Instead of searching for specific information, surfing is an undirected type of Web browsing. You amuse yourself by clicking whatever catches your fancy.

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