Atari 520ST - Page 75

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RAM Random
Access
Memory.
The part
of the
computer’s
memory
that is
used
to “write
to’’ and
“read
information
from”.
When
you
work with
your
computer,
the
display
on the screen
is in
RAM.
The
information
stored
in
RAM is lost
each
time
you turn off
the
computer.
RGB
Red,
Green,
Blue.
The color
signals
that the
ST
Computer
produces
to create
its
special color
display.
The
combination
of
eight different
intensities
of red,
green,
and blue
enable
you to
create
512 colors
with
the ST
Computer.
ROM
Read
Only
Memory. The
part
of the
computer’s
memory
con-
taining the
start-up
information
for the
computer.
The
ROM is
pro-
grammed
at the factory
and never
changes.
RS232C
The
RS232C
connector
is
a standard
connection
for
peripheral
devices.
On
the back
of the
ST
Computer this
connector
is
labeled
“Modem”.
The
RS232C
port is
also referred
to as the
serial
port.
Serial
printers
can be
connected
to the
ST
Computer
through
this port.
Scroll
To move
the
information
in
a GEM
Desktop
window
left,
right,
up, or
down.
Scroll Arrow
There
may
be
up to four Scroll
Arrows—
up
/down
and
left/
right
—
on
each
window. Clicking
the Scroll
Arrow
scrolls
the
window in
the
direction of
the arrow.
Scroll
Bar
One
of two
bars that
border
a
window
on
the
bottom
and
right
edges.
The
Scroll
Bars contain
the
Scroll
Arrows
and
the
Scroll
Box
used
to move the
insides
of the window.
Scroll
Box
A rectangular
box inside
the Scroll
Bar that
shows the
relative
size
and
position
of the
data shown
in
a
window.
The
larger
the
Scroll
Box
the greater
the
percentage
of
the complete
window
is visible.
Sector
A section
of
a track
on
a
hard
or floppy
disk.
Sectors are
usually
128,
256, 512,
or 1024
bytes long.
On the
ST Floppy
Disk,
the
sectors are
512
bytes.
(See Track.)
Size Box
A small
box
at the lower
right-hand
corner
used
to
change
the size
of the
window.
Sizing
The
process of
changing
the
size or
shape of
a
window.
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