The minimum width of acharacter is five dots.
Dots cannot overlap.
You may define any position in the ASCII table.
Photocopythe gridin Figure9-1 to help design your newcharacters. We will
useatiny representation of atelephone symbol for our example.
Figure 9-1. Usethis grid (or one similar to it) to define your own characters.
Assigning the character data
Now, wecalculate the vertical numerical values of the columns of dots, and
enterthem underneaththe grid.Each vertical column(which hasamaximum
of 24 dots) is first divided into three groups (or two groups for super/
subscripts)of eightdots. Each group of eightdots is representedby one byte,
which consistsof eight bits.
Thisis where the numbers down the left side of the grid come in.Notice that
there is anumber for each row of dots and that each number is twice the
numberbelow it. By making these numbers powers of two we can take any
combination of dots in avertical column and assign them aunique value,
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