random access memory (RAM).
Read/write
memory.
RAS.
In
the IBM Personal Computer, row address strobe.
raster. In computer graphics, a predetermined pattern of lines
that provides uniform coverage of a display space.
read. To acquire or interpret data from a storage device, from a
data medium, or from another source.
read-only memory (ROM). A storage device whose contents
cannot be modified. The memory
is
retained when power
is
removed.
read/write memory. A storage device whose contents can be
modified. Also called RAM.
recoverable error. An error condition that allows continued
execution of a program.
red-green-blue-intensity (RGBI). The description of a
direct-drive color monitor that accepts input signals of red, green,
blue, and intensity.
redundancy check. A check that depends on extra characters
attached to data for the detection of errors. See cyclic redundancy
check.
register.
(1)
A storage device, having a specified storage capacity
such as a bit, a byte,
or
a computer word, and usually intended for
a special purpose. (2) A storage device in which specific data is
stored.
retry. To resend the current block of data (from the last EOB
or
ETB) a prescribed number of times, or until it
is
entered correctly
or
accepted.
reverse video. A form
of
highlighting a character, field,
or
cursor
by reversing the color of the character, field, or cursor with its
background; for example, changing a red character
on
a black
background to a black character
on
a red background.
Glossary-29
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