Radio Shack TRS-80 X-PAD GT-116 - Connecting the X-Pad; Using the Pen

Paper
on
the
Wtiting Surface
protects the
surface and
keeps
it
clean m well.
Connecting
the X-Pad
You
must
connect
the X-Pad
to
the
Color
Computer
before
turning
the
Computer ON!
1.
Be
sure
the Writing Surface is clean and
dry.
2.
Place
a
sheet
of standard-sized
paper
(8
1/2"
x
11")
on
the
Writing
Surface.
You can
tape
the paper in place (a
piece
of
tape
at
each of the Pad's
corners
will do the
trick).
3.
Turn
the
TVON,
select channel 3
or
4,
and set
the
Antenna
Switch to COMPUTER.
4.
Carefully
insert
the
Interface Pak into the
cartridge
slot
(on
the
right side of the
Computer). Be sure
the
Pak
is
firmly
connected
to
the
Computer.
5.
Turn
the
Computer ON.
6.
The
Extended
Color BASIC start-up
message,
followed
by
OK
f
will
appear
on the
TV.
The
Computer
and
the X-Pad are now ready
for
use.
Using
th«
Pen
When
the
Pen
k
on the Writing Surface
(or even near!)
and
you
move
tlie
tip of the
Pen
around,
a
signal which
defines
an
X-Y
coordinate is "sent" to the
Computer.
What
the
Computer does
with that
signal
depends
on the
program
you're
running.
Some
programs
will require that you
actually
have to
press
the
tip
of
the
Pen
down on the
paper; other
programs
simply
require that you move
the
Pen from one
position
to
another.
Important
Note! Do not use a pencil or felt-tip pen to
write
on paper that is
on the X-Pad surface
or inaccuracy
may occur.
For consistent
repeatibility of
data, you
must
maintain a
consistent angle when
holding the Pen.
Chapter
1
Checkpoint
1. The X-Pad works by:
a.
reading points
with light.
b. ultrasound.
c. digitizing
coordinates.
d. biorhythms.
2. The X-Pad has three parts:
a. Pen, Interface Pak,
and Keyboard.
b.
Pen,
Interface
Pak, and Pad.
c. Pen,
Keyboard, and Tape Recorder.