User's Manual

Read
To gather data from one source (such as a disk) and transfer it
to a device (such as a screen or a printer). For example, when
you open a file stored on disk, the computer reads the data
from the disk and displays it on the screen. See also Write.
Read/wife head
The physical device inside a disk or tape drive that reads data
from and writes data to the magnetic surface of the disk or tape.
Real- time clock
A clock inside the computer that keeps track of the time and
date, even when the computer is turned off, by using power
from a backup battery.
Refresh rate
The frequency with which a monitor can redraw a screen
image. The faster the refresh rate, the less the screen will
flicker.
Reset
To restart a computer without turning it off. You can reset your
computer by pressing Ctrl Alt Delete. Resetting erases all data
stored in RAM and reloads your operating system.
ROM
Read Only Memory. Memory that can only be read and cannot
be modified. ROM retains its contents even when you turn off
the computer by using power from a backup battery.
Glossary 13