~
~
~
sector.
That
part
of
a
track
or
band
on
a magnetic drum, a
magnetic disk,
or
a disk
pack
that
can
be
accessed
by
the
magnetic heads in the course
of
a
predetermined
rotational
displacement
of
the
particular device.
SERDES. Serializer/deserializer.
serial.
(1)
Pertaining
to
the
sequential performance
of
two
or
more
activities in a single device.
In
English,
the
modifiers serial
and
parallel usually
refer
to
devices,
as
opposed
to
sequential
and
consecutive, which refer
to
processes.
(2)
Pertaining
to
the
sequential
or
consecutive occurrence
of
two
or
more related
activities in a single device
or
channel.
(3)
Pertaining
to
the
sequential processing
of
the
individual
parts
of
a whole, such as
the
bits
of
a
character
or
the
characters
of
a word, using the same
facilities for successive parts.
(4)
Contrast
with parallel.
serializer/deserializer
(SERDES). A device
that
serializes
output
from,
and
de
serializes
input
to, a business machine.
setup.
(1)
In
a
computer
that
consists
of
an
assembly
of
individual computing units,
the
arrangement
of
interconnections
between
the
units,
and
the
adjustments
needed
for the
computer
to
operate. (2)
The
preparation
of
a computing system
to
perform
a
job
or
job
step.
Setup
is usually performed
by
an
operator
and
often
involves performing routine functions, such
as
mounting
tape
reels.
(3)
The
preparation
of
the
system for
normal operation.
short circuit. A low-resistance
path
through
which
current
flows,
rather
than
through
a
component
or
circuit.
signal. A variation
of
a physical quantity,
used
to
convey data.
sink. A device
or
circuit
into
which
current
drains.
software.
(1)
Computer
programs, procedures,
and
rules
concerned
with
the
operation
of
a
data
processing system.
(2)
Contrast
with hardware.
source.
The
origin
of
a signal
or
electrical energy.
Glossary-31
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