operating system. Software that controls the execution of
programs;
an
operating system may provide services such
as
resource allocation, scheduling,
input/output
control, and data
management.
OR. A logic operator having the property
that
if P
is
a statement,
Q is a statement, R
is
a statement, ... , then the
OR
of P,
Q,
R,
..
.is
true if at least one statement
is
true, false if all statements are
false.
OR
gate. A gate in which the output
is
1 only if at least one input
is
1.
output. Pertaining to a device, process, or channel involved in an
output process, or to the data or states involved in an output
process.
output process. (
1) The process that consists
of
the delivery of
data
from a data processing system,
or
from any part of it.
(2)
The return of information from a data processing system to an
~
end user, including the translation of data from a machine
language to a language that the end user can understand.
overcurrent. A current of higher than specified strength.
overflow indicator.
(1)
An
indicator that signifies when the last
line on a page has been printed or passed.
(2)
An
indicator that
is
set
on
if the result of an arithmetic operation exceeds the capacity
of the accumulator.
overrun. Loss of data because a receiving device
is
unable to
accept
data
at the rate it is transmitted.
overvoltage. A voltage of higher than specified value.
parallel. (
1) Pertaining to the concurrent or simultaneous
operation of two
or
more devices, or to the concurrent
performance of two
or
more activities.
(2)
Pertaining to the
concurrent or simultaneous occurrence of two or more related
activities in multiple devices
or
channels.
(3)
Pertaining to the
Glossary-2S
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