This is a good example of how hexadecimal digits can be displayed on seven-segment displays. A combination of uppercase and lowercase letters is used for A–F; this is done to obtain a unique, unambiguous shape for each hexadecimal digit (otherwise, a capital D would look identical to an 0/O and a capital B would look identical to an 8). Also the digit 6 must be displayed with the top bar lit to avoid ambiguity with the letter b.
Hexadecimal encodings for displaying the digits 0 to F
Digit a b c d e f g
0 on on on on on on off
1 off on on off off off off
2 on on off on on off on
3 on on on on off off on
4 off on on off off on on
5 on off on on off on on
6 on off on on on on on
7 on on on off off on off
8 on on on on on on on
9 on on on on off on on
A on on on off on on on
b off off on on on on on
C on off off on on on off
d off on on on on off on
E on off off on on on on
F on off off off on on on
The above table should assist you when setting up your 7 segment displays.
Touch the logic source pads to work out which combination you wish to use.
