programming system.
One
or
more programming languages
and
the
necessary software for using these languages with particular
automatic data-processing equipment.
PROM.
Programmable read-only memory.
propagation delay. (1)
The
time necessary for a signal
to
travel
from
one
point
on
a circuit
to
another. (2)
The
time delay
between
a signal change
at
an
input
and
the corresponding change
at
an
output.
protocol.
(1)
A specification for the format
and
relative timing
of
information exchanged
between
communicating parties.
(2)
The
set
of
rules governing the operation
of
functional units of
a communication system
that
must
be
followed if communication
is
to
be
achieved.
pulse. A variation in the value
of
a quantity, short in relation
to
the
time schedule
of
interest,
the
final value being
the
same as the
initial value.
radio frequency (RF).
An
ac frequency
that
is
higher
than
the
highest audio frequency. So called because
of
the application
to
radio communication.
radix. (1)
In
a radix numeration system, the positive integer
by
which the weight
of
the digit place
is
multiplied
to
obtain
the
weight
of
the
digit place· with the next higher weight; for example,
in
the
decimal numeration system
the
radix
of
each
digit place
is
10. (2)
Another
term
for base.
radix numeration system. A positional representation system in
which the ratio
of
the weight
of
anyone
digit place
to
the weight
of
the
digit place with the next lower weight
is
a positive integer
(the
radix).
The
permissible values
of
the character in any digit
place range from 0 to
one
less
than
the
radix.
RAM.
Random
access memory.
Read/write
memory.
random access memory (RAM).
Read/write
memory.
RAS.
In
the
IBM
Personal Computer, row address strobe.
Glossary-28
To Next Page
Loading...
Need help?
General
