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The numbers for the second and third lines were calculated in the
same manner. Once the numbers for the pin patterns are calculated,
they go in DATA statements, separated by commas.
First we'll give you the whole program and its printout; then we'll
explain two techniques we have not used before:
In this program we used the number 128 in the DATA statements
to signal the end of a print line. This is the reason for the IF-THEN
statement in line
The other special technique used in this program is found in lines
620
and 630. Since some of the data numbers are repeated many
times, we save typing by using negative DATA numbers for repeti-
tions. Line 620 tests for a negative number, and if it finds one, reads
the next two numbers and prints their pin patterns the number of
times indicated by the negative number.
For example, when the minus 6 in line 800 is read, the program
then reads the next two numbers (8 and 0) and sends them to the
printer six times. This feature is not a necessary part of the program,
but it does allow you to type fewer data numbers.
Otherwise the program is a straightforward graphics program that
uses 7-dot line spacing and reads numbers from DATA statements
and sends them to the printer. If you want to see the figure in other
densities, change the "Y" in line
610
that skips to line
600
650
and causes a line feed.
to "L" or "Z".
85
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