AMT Datasouth 41AY89AR777 - Manual (Page 96)

PRINTWIRE
NUMBER
DECIMAL
VALUE
Figure 4.8 Print Wires (Epson Graphics)
As shown in Figure 4.8, each print wire has a decimal value assigned to it. A
print wire is fired by sending the decimal value that corresponds to that print
wire. For example, to fire print wire number 2, the user would send CHR$(64).
If more than one print wire is to be fired, the decimal values of the print wires to
be fired are added, and the sum is sent. For example, to fire print wires number 2
and number 4, CHR$(80) would be sent. Print wire number 2 has a decimal value
of 64 and print wire number 4 has a decimal value of 16. The sum of the decimal
values is 80.
In order to print a figure using the individual print wire control described above,
the figure must first be plotted on graph paper as individual dots.
Because of the high resolution used in graphics, such as 72 dots per inch, it will
be necessary to plot the figure at a scale greater than 1 to 1 in order to plot
individual dot positions.
Figure 4.9 is an example of how to plot a figure as individual dots in single
density Epson graphics. The figure at the tallest point is 36 dots high. With a
vertical resolution of 72 dots per inch the printed figure will be 1/2 inch tall. At
the widest point the figure is 35 dots wide. With a horizontal resolution of 60
dots per inch the printed figure will be just over 1/2 inch wide (by five dots).
Notice also that the two smaller coliunns are 24 dots tall (1/3 inch) and 18 dots
tall (1/4 inch).
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