I
-
.-
,-
J,
.-
RF modulator: See radJc>.frequeocy
modulator.
RGB card: A
card
thai translale5
l.ht:
computer's
v~
~
ful
iGll
moniwJS.
RGB
monltor.
A type
cL
color
monilor
that
receives
sepu2le
sigtl2ls ror lhe colors red,
green,
10M
Nue. Compare
composite
morulor.
RJgbt
Arrow:
A key
thaI
(in
most
progr.tms)
moves the cursor
one
chmcler
10
the righL
ROM:
see
read-only
memory.
run:
To
C1.~
a program \0 execute
or
carry
out
instructions
save:
To
store a program or data on a disk (as
opposed
to Sioting it
temporarily
in
RAM
memory),
scroU: To move
new
text
inlO
view
on
the screen.
Most applications can scroll vertically;
some
am
also
scroll horiwmally.
sector:
The
formalting
process
divides disks into
concentnc circles
ClUed
trach
and tracks into
seaors See also
track.
serial
interface:
An
interface that communicates
<!ala
bet\\'Cen a
computer
and
a peripheral device
one
bit
11.1
a urne
Compue
parallel
interface.
shielded
cable:
A
cable
!.hat
reduces
the
emission
and
rettption
of
elearom3gnetic
waves
so
WI
3-
romp.Her
system
won't
interfere with radio,
television,
and
orner
electronic
devices
Shielding
also
keeps
other
electronic
devices from
interfering with
the
computer.
Shift: A key that
when
pressed
in combination
with anOlher key yields
an
uppercase
leller
or
the
upper
character
on
a
lwo-charader
key.
shutt~r:
1be
metal plate
on
a 3.5
..
inch disk
Wt
protectS the disk medium.
Once
placed
in a drive,
the
drive mechanism slides
the
shutter
aside
so
that the read-wnte
head
can h2ve access
to
the
disk
simubtion:
A
compulerized
representation
of
something.
Computer
chess-playing
games
and
programs testing the
aerodynamic
qualities
of
a
wing
design
are
examples
of
simub.tions.
single-sheet
feedu:
A device th2t attaches to a
printcr
and
feeds .single
sheets
of
paper
to
the
printer as
needed.
An
efficient
way
to
print
multipagc dOCllments
on
lettcrhcad.
65C02:
The
eight-bit
microprocessor
that
does
thc
computing
in
thc
Applc lIc.
5101:
A long,
narrow
connector
on
thc Apple
He
main logic
board
into which you plug
an
interface
card.
On
the
Apple IIc, dcvices arc
connected
to
ports
on the
back
panel
softwart':
Programs,
thc
scts
of
insLnlctions
lh21
teU the
computer
what
to
do.
Compare
banlware.
software
dlrKtOry:
A book that lists available
software
software
plr.ue
A person
who
makes illegal
copies
of
.software
source
'\'olum~:
lhe
disk you're Copying from.
Compare
destination
volume.
Space
bar:
1be
bar
at
the
bottom
of
the
keyboard~
pressing it inserts a
space
charactcr into your texL
spedallnl~resI
software:
Software written for
specific
purposes,
like
aeronautic
design, medical
diagnoses,
or
legal research. Also called
vertical
market
software and
Industry
spedfK:
software.
Glossary
157
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