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Learning More About Your Computer 5–27
Understanding Computer Terms
right-click
To press and quickly release the right mouse button to display a menu
of options. See pop-up menu.
ROM (Read-Only Memory)
Memory that contains the basic instructions for the microprocessor.
ROM is permanent memory; turning off the computer does not erase
it. Since you cannot change or write to ROM, it is referred to as
read-only. See microprocessor. See also RAM.
Run-In/Run-Out Blocks
Blocks of written data before and after a packet or a track. These
blocks allow the recorder to synchronize with the data on the CD and
to finish up interleaved data. Four run-in blocks and two run-out
blocks are written for each packet.
S
scanner
A device that creates digital images of printed documents and
photographs. Optical character recognition (OCR) and photo
manipulation programs allow you to save and edit the images on your
computer. See digital
screen saver
A moving picture or pattern that appears on the screen when you stop
using your computer for a specified period of time. Originally
designed to protect the monitor, screen savers are now used for
amusement.
scroll
To gradually move information across the screen when a document or
Web page is too long or too wide to view all at once. Scroll bars are
located along the right side and across the bottom of a window. When
scroll arrows are present at the ends of the bars, you know that some
information is off the screen. Click one of the arrows to scroll the
information into view. See click.