Glossary
This
glossary
defines
the
special
terms,
abbreviations,
and
acronyms
that
are
used
in
this
publication.
If
you
do
not
find
the
term
you
are
looking
for,
refer
to
the
index
or
to
the
Dictionary
of
Computing,
1994.
Numbers
2:1
compression
The
relationship
between
the
quantity
of
data
that
can
be
stored
with
compression
as
compared
to
the
quantity
of
data
that
can
be
stored
without
compression.
In
2:1
compression,
twice
as
much
data
can
be
stored
with
compression
as
can
be
stored
without
compression.
A
A
Ampere.
ac
Alternating
current.
access
method
A
technique
for
moving
data
between
main
storage
and
input
or
output
devices.
adapter
card
A
circuit
board
that
adds
function
to
a
computer.
adj
Adjustment.
AIX
Advanced
Interactive
Executive.
IBM’s
implementation
of
the
UNIX
®
operating
system.
The
RS/6000
system,
among
others,
uses
AIX
as
it’s
operating
system.
alphanumeric
Pertaining
to
a
character
set
that
contains
letters,
numerals,
and
usually
other
characters,
such
as
punctuation
marks.
alter
To
change.
ambient
temperature
The
temperature
of
air
or
other
media
in
a
designated
area,
particularly
the
area
surrounding
equipment.
ampere
(A)
A
unit
of
measure
for
electric
current
that
is
equivalent
to
a
flow
of
one
coulomb
per
second,
or
to
the
current
produced
by
one
volt
applied
across
a
resistance
of
one
ohm.
ANSI
American
National
Standards
Institute.
archive
To
collect
and
store
files
in
a
designated
place.
ASCII
American
National
Standard
Code
for
Information
Interchange.
A
7
bit
coded
character
set
(8
bits
including
parity
check)
that
consists
of
control
characters
and
graphic
characters.
assigning
a
device
The
establishing
of
the
relationship
of
a
device
to
a
running
task,
process,
job,
or
program.
assignment
The
naming
of
a
specific
device
to
perform
a
function.
©
Copyright
IBM
Corp.
2007
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