Advanced
Graphics
Example
The
Transtar
315
can
be
programmed
to
beautiful
color
pictures.
It
will
individually
640
horizontal
dots
across
the
page.
The
following
illustrates
how
to
develop
and
a
graphic
symbol.
Assume
we
wish
to
create
a
“spades”
character.
First
you
need
to
plot
the
character
on
graph
paper.
Remember
that
on
a
single
pass
of
the
printhead
8 vertical
dot
columns
may
be
printed.
1
e
2
6
e
3
6
e
4
@
6
5
6
8
6
®
e
7
6
8
6
Next,
convert
the
columns
to
binary
digits.
Read
columns
|
thru
7
from
the
bottom
up.
A
B
Column
1
-
0000
1000
2
-
0001
0100
3
--
0010
0010
4
-
1100
0001
§
-
0010
0010
6
~
0001
0100
7
-
0000
1000
Now
using
Appendix
B,
the
ASCII
code
table,
convert
the
binary
numbers
to
their
decimal
equivalent.
Column
A
refers
to
the
top
column
and
Column
B
refers
to
the
rows.
For
column
1,
find
‘0000’,
then
look
down
the
side
rows
to
find
‘1000’.
This
value
is
8.
Column
1
--
0000
1000
=
8
2
--
0001
0100
=
20
3
-
0010
0010
=
34
4
-
1100
0001
=
193
5
~0010
0010
=
34
6
-—
0001
0100
=
20
7
-
0000
1000
=
8
Now
you
are
ready
to
begin programming.
Let’s
also
make
use
of
character
position
(POS
n2nIn0)
and
color
selection
(DC4+n).
52