229
Glossary
5.375 x 8.375 ver 2.3
processor
— See
central processing unit (CPU)
.
program
— A set of instructions that can be executed by a computer.
The general classes of programs (also called software) are operating
system, application, and utility. See also
operating system,
application, utility
.
properties
— The attributes of an object or device. For example, the
properties of a file include the file’s type, size, and creation date.
R
RAM (random access memory)
— Volatile memory that can be
written to as well as read. By volatile, we mean that information in
RAM is lost when you turn off your computer. This type of memory
is used for your computer’s main memory. See also
memory.
Compare
ROM.
random access memory
— See
RAM.
read-only memory
— See
ROM.
reboot
— See
boot
,
restart
.
removable disk
— A disk that can be removed from a disk drive. A
diskette is one example of a removable disk.
resolution
— A measure of the sharpness of the images that can be
produced by a printer or displayed on a screen. For a printer,
resolution is expressed in dots per inch (dpi). For a screen, it is
expressed as the number of pixels available horizontally and
vertically.
restart
— Synonymous with reboot. To reset the computer by reloading
the operating system without turning the computer off. See also
boot
.
RJ-11
— A modular connector used on most U.S. telephone systems
and direct-connect modems. The RJ-11 connector is a 6-wire
connector.
RJ-45
— A connector used to attach computers to LANS (local area
networks) and to link ISDN (Integrated Services Digital Network)
devices to NT-1 (Network Terminator devices). Also called.
