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Data numbers
2The bits within each byte have values of 1, 2, 4, 8, 16, 32, 64, and
128. In the vertical column of dots, the bits are arranged so that the
most significant bit (which has a value of 128) is at the top and the least
significant
bit (which has a value of 1) is at the bottom.
Figure 67 shows how to use this method to calculate the data
numbers for the example character. On the left side of the figure the
data numbers are calculated for the middle column. The value of each
byte is calculated by adding the values of the rows where dots appear
The right side of the figure shows the whole character with the three
data numbers for each column indicated at the bottom.
This manual uses decimal numbers because the example programs
in this manual are written in BASIC. The data you send to the LQ2500,
however, can be in any form (binary decimal, hexadecimal) that can be
used with your programming language.
After you’ve designed a character on a grid and translated the dots to
decimal equivalents, the last step is to send this information to the
printer.
Fqure 67.
calculating the data
6.14
Garaphics and under-defined Characters