Printer User's Manual

● Theminimumwidthof a characteris five dots.

● Dotscannotoverlap.

● Youmay defineanypositionin theASCIItable.

PhotocopythegridinFigure5-1tohelpdesignyournewcharacters.Wewill

usea tiny representationof a telephonesymbolfor our example.

Figure 5-1. Use this grid (or one similar to il) to define your own characters

Assigning the character data

Now,wecalculatetheverticalnumericalvaluesofthecolumnsofdots,and

enterthemunderneaththe grid.Eachverticalcolumn(whichhas a maxi-

mumof 24 dots)is firstdividedintothreegroups(ortwo groupsfor super/

subscripts)ofeightdots.Eachgroupofeightdotsisrepresentedbyonebyte,

whichconsistsof eightbits.

Thisiswherethenumbersdowntheleftsideofthegridcomein.Noticethat

thereis a numberfor each row of dots and thateachnumberis twicethe

numberbelowit.Bymakingthesenumberspowersoftwowecantakeany

combinationof dotsin a verticalcolumnand assignthcm a uniquevalue.