2-28 Theory of Operation
5-bit Numeric Character Set as Defined by ISO/IEC 7811
Binary
Note
Char
Parity
2
3
2
2
2
1
2
0
0
1
0
0
0
0
1
0
0
0
0
1
2
0
0
0
1
0
3
1
0
0
1
1
4
0
0
1
0
0
5
1
0
1
0
1
6
1
0
1
1
0
7
0
0
1
1
1
8
0
1
0
0
0
9
1
1
0
0
1
H :
1
1
0
1
0
S ;
0
1
0
1
1
H <
1
1
1
0
0
F =
0
1
1
0
1
H >
0
1
1
1
0
E ?
1
1
1
1
1
Code Description
H These characters are used to control the hardware and cannot be part of the data
content. (These may or may not be used by different device manufacturers.)
S,E,F Reserved characters for Start Sentinel, End Sentinel, and Field Separator
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