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Fundamentals 01 Dot Matrix Printing
00ll
---------------------9
10 RESTORE
1S WIDTH "LPTI:".25S
20 LPRINT CHR$(27):"@";CHR$(27);"!"
30 FOR L : 1 TO 2
40 LPRINT CHRS(27);"K":CHRS(114);CHRS(Oll
50 FOR SPACE
=
1 TO 100: LPRINT CHRS(Q):: NEXT SPACE
60
FOR COlM
= 1
TO
14 :
READ
C
I
LPRINT CHRS(C):: NEXT COLM
70
lP~INT
: NEXT l
80 DATA 14.16.34.64,140.140.128,129,140.140,64,34.16,14
90
DATA
224.16,232,68,34.18,18.18,18,34.68.232,16.224
100 lPR!NT CHR$(27):"@":LPRINT:lPRINT:LPRINT
Let's run the program and see if we can get a smile both on
the paper and on the face of the Gemini operator who's creating
dot matrix graphics.
Now, if you want to try a little something different, change line
40 to:
40 LPRINT CHR$(27); "L"; CHR$(114); CHR$(O);
and run the program again. High-resolution packs the dots twice
as close together, horizontally. For the same size drawing, you
would need twice as many dots. Therefore, you'd have to send
twice as many print head control characters to Gemini.
By this time, you probably have a good idea of how Gemini
works and how to make use of its extensive features. You might
want to take some time now and explore your own ideas, based
on the information presented thus far. In the next chapter, we'll
consider the use of special symbol characters, block graphics, and
some advanced graphic techniques.
97
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