SB-10 USER'S MANUAL

izontal tine every eight rows on your graph paper. The dot columns
are represented by the column of eight blocks between the horizontal
lines. Each of the blocks on the graph represents a pin on the print
head. It may be helpful to write the pin values (128,64,32, etc.) down
the left side of each row. Now you can use a pencil or felt tip marker
to draw the picture you want on the graph paper (Figure F-8). After
you have filled in the “dots” that you want to print, add up the values
of each column of dots: the sum total represents one byte.
Figure F-8. Planning your graphic design on graph paper.
In the program below, we have taken the graphics information
from the design in Figure F-8 and put it into BASIC data statements:
NEW
10 WIDTH “LPT1:“,255
20 LPRINT CHR$(27) CHR$(Sl) CHR$(lO)
30 FOR ROW=1 TO 8
40 LPRINT CHR$(27) “Y“ CHR$(GO) CHR$(O);
50 FOR COLUMN=1 TO 60
60 READ X
70 LPRINT CHR$(X);
80 NEXT COLUMN
90 LPRINT CHR$(lO);
100 NEXT ROW
110 LPRINT
120 LPRINT “SMILE”
130 DATA O,O,O,O,O,O,O.O,O,O
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