Chapter 2 Configuring the
The printer does not calculate the check digit, or automatically generate frame bars. They must be generated by the computer resident software, and sent to the printer. To do this, it is necessary to design a program that will convert a pair of digits into ten vertical bars.
NOTE: Each digit is five bars, with each printable character being two bars.
Thus, 2 1/2 characters are needed to print one digit.
Frame |
| Correction | Frame |
Bar | 0 1 2 3 4 - 5 6 7 8 - 9 1 | Digit | Bar |
| Check Digit |
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1 | 11000 | 00011 | 00101 | 00110 | 01001 | 01010 |
01100 | 10001 | 10010 | 10100 | 00011 | 00101 | 1 |
00 = | 01 = |
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| 11 = |
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= \ (5C/h) | = ~ (7E/h) |
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| = } (7D/h) |
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| = { (7B/h) |
| = ‘ (60/h) | |||
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= ^ (5E/h)
Perform the following steps to determine the check digit for
1.Calculate the check digit:
Add the digits of the postal code: 4+5+8+3+4+8+8+4+4+7+0 = 51
2.Subtract from the next highest multiple of ten:
The check digit is 9.
The barcode can be created one of two ways. The first, uses the frame bars as separate characters, the second “links” the frame bars to the first and last characters.
| Method 1: |
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Frame Bar: | \ | (1) |
Characters “45”: | }~{{{ | (01001 01010) |
Characters “83”: | {}~}{ | (10010 00110) |
Characters “48”: | }~`~{ | (01001 10010) |
Characters “84”: | {}~{} | (10010 01001) |
Characters “47”: | }~}~} | (01001 10001) |
Characters “09”: | `~}}~ | (11000 10100) |
Frame Bar: | ^ | (1) |
Text sent to Printer: | SO\}~{{{{}~}{}~`~{{}~{}}~}~}`~}}~^SI | |
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