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The minimumwidthof a characters five dots.
Dots cannotoverlap.
Youmay defineanypositionin the ASCIItable.
PhotocopythegridinFigure8-1tohelpdesignyournewcharacters. W ewill
use a tiny representationof a telephonesymbolfor our example.
[
Figure 9 1. Use
this grid (or one similar to it) to define
your own
characters.
Assigningthe characterdata
Now,we calculatethe verticalnumericalvaluesof the columnsof dots,and
enterthemunderneaththegrid.Eachverticalcolumn(whichhasamaximum
of 24 dots) is first divided into three groups (or two groups for super/
subscripts)ofeightdots.Eachgroupof eightdotsis ~presentedbyonebyte,
whichconsistsof eightbits.
Thisis wherethenumbersdowntheleftsideofthegridcomein.Noticethat
there is a numberfor each row of dots and that each number is twice the
numberbelowit. Bymakingthesenumberspowersof two we can take any
combinationof dots in a verticalcolumnand assignthem a uniquevalue.
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