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- Random Access Memory (RAM)
- main memory. Volatile memory that is
erased when power is turned off.
- Read Only Memory (ROM)
- memory which cannot be changed. Contains
the minimum instructions to start the computer.
- Read The Fine Manual
- device which displays computer output.
Short for "computer screen" or "display screen"
- record
- a related set of data which are contained
in fields
- recording density
- how close together bits can be on a
sector on the innermost track of a storage disk.
- refresh rate
- how often the picture is redrawn on a
monitor
- registration code
- a special code that identifies you as a
legal purchaser of software or hardware
-
relational database
- a database composed of linked tables which have records which
are made up of fields. No one table has all the information about
a record.
- removable media
- storage media that are removed from the
computer, such as floppy diskettes, tapes, CD-ROM disks
- replace
- replace specific word(s) or character(s)
with stated text
- reset button
- used to restart the computer quickly
- response time
- how long it takes the computer to respond
when data is entered
- reverse video
- highlights selected text with a
background color and a change of text color.
- rewritable
- CD disk which can be erased and written
on again.
- RGB color system
- red, green, blue dots on a standard
monitor screen can create all the colors by combining what dots
are aglow.
- ribbon cable
- a wide flat connection cable. Used for
connecting drives to the motherboard or controller card
- ring configuration
- network configuration where devices are
connected in a ring.
- root directory
- area on storage disk that lists where
things are on the disk. Names as in A:\ or C:\
- rotational delay
- time to rotate a storage disk under the
read/write head of the drive to the correct sector. Measured in
milliseconds (ms).
- router
- connects several networks and controls
the traffic of data among the networks
- RTFM
- Read The Fine Manual
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