Atari 520ST - Page 74

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Medium-Resolution
One of the
three video display
modes
accessible
to
the
ST Computer.
In
medium-resolution mode,
the ST
Computer
display
consists of
640 dots horizontally
by
200 dots vertically. In
this mode,
the ST Computer
can display
up to
four
colors
at a time
from the
total palette
of 51
2
colors.
Memory
The electronic
circuits
that the ST
Computer
uses to store
data and
programs are
its memory.
There are
two kinds of
memory:
RAM (Random
Access
Memory) and
ROM (Read Only
Memory).
RAM loses
its data if the
power is turned
off;
ROM
retains
its information
whether
it has power
or not.
Menu
Bar When
you first start
up the ST
Computer
System, the
headings
on the
Menu Bar
at the top of the
GEM Desktop are:
Desk, File, View,
and Options.
Depending
upon the
application
pro-
gram
you
are
using,
you
may
have different
headings.
MIDI Interface
MIDI
stands for
Musical Instrument
Digital Inter-
face.
It is
a standard interface
designed
to
connect
a
computer
to
a
number
of electronic
musical
devices.
Modem A device
that allows
you
to connect your
computer directly
to the telephone
lines
and establish
a communication
link with
other
computers
and on-line information
networks.
Mouse The
mouse controls the movement of the
mouse pointer
on
the
GEM
Desktop. As
you
slide the mouse
across your
table or
desk, the small
rubber ball
on
the bottom rolls
back and forth
to
track the
movements.
The mouse has two buttons.
The left
button
is
used to select and open
files, icons,
and
programs. The
right
button
is used with
special application programs.
Move
Bar A bar at the
top edge of
a
window.
Click
on the
Move
Bar
to
drag
a
window
to a new location on
the
GEM
Desktop.
Parallel
Interface
This connector
is a standard for
high-speed
printer
connections.
On the
back of the ST
Computer, the parallel
interface
port is labeled
"Printer”
Peripheral
Any kind of peripheral
device that
you connect to your
computer (i.e.,
disk drive,
monitor, printer).
Pixel The
ST Computer
video
display is made
up of tiny
dots
called
pixels.
The pixels are
arranged
in a grid, and
set to either
320 x
200,
640
x
200,
or
640
x
400
dots
per
grid.
Pointer
The
pointer (also called
the
mouse pointer)
is used
to
point
to objects on the
GEM Desktop.
It follows your
movement
of the
mouse (or cursor
keys)
forward,
backward,
left, or right.
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