Unit installation

Figure 4-3. Arrow design
After finishing the design, you divide it into print lines and calculate
the CHR$ numbers for each column.
The arrow design can be divided into three print lines, each seven
dots high. Then you look at the pattern of dots in each column to
calculate the CHR$ numbers. The results for the first print line are
shown in Figure 4-4. The pin values are on the left side and the sums
are at the bottom of each column.
Figure 4-4. First line of arrow figure
The CHR$ number for each column is 128 plus the numbers of all
the rows that have dots in them. For example, in the first column of
the first line there is a dot in the 2 row, so you add 128 and 2 for a total
of 130, which is the number at the bottom of the column. In the sec-
ond column there are dots in the 2 row and the 4 row, so you add 128,
2, and 4 for a total of 134.
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