Kod wejściowy 11 C B A |
Nr wyjścia wyróżnionego | ||||
8 |
4 |
2 |
1 | ||
0 |
0 |
0 |
0 |
0 | |
0 |
0 |
0 |
f |
i | |
0 |
0 |
/ |
0 |
2 | |
8 |
0 |
i |
1 |
3 | |
0 |
i |
0 |
8 |
4 | |
0 |
1 |
0 |
1 |
5 | |
0 |
1 |
1 |
8 |
6 | |
0 |
1 |
1 |
1 |
1 | |
1 |
0 |
0 |
0 |
8 | |
/ |
0 |
0 |
1 |
9 | |
Qj |
'/ |
0 |
1 |
0 |
2 |
1 |
0 |
1 |
1 |
3 | |
i |
f |
0 |
8 |
4,8 | |
1 |
1 |
0 |
/ |
S,9 | |
1 |
i |
f |
1 |
0 |
6J |
§ |
i |
1 |
1 |
f |
7,3 |
o
Rys. 4.409. Schemat logiczny dekodera 8421 BCD 1 z 10
Tablica 4.34
Tablica we/w/ dekoderów scalonych : 42t 43 i 44
Kod wejściowy dekodera
42
43
44
Kod wyjściowy dekoderów: 42, 43 i 44
0 C BA |
0 C BA |
D C B A |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
L L L L |
L L H H |
L L H L |
L |
H |
H |
H |
H |
H |
H |
H |
H |
H |
L L L H |
L H L L |
L H H L |
H |
L |
H |
H |
H |
H |
H |
H |
H |
H |
L L H L |
L H L H |
L H H H |
H |
H |
L |
H |
H |
H |
H |
H |
H |
H |
L L H H |
L H H L |
L H L H |
H |
H |
H |
L |
H |
H |
H |
H |
H |
H |
L H L L |
L H H H |
L HLL |
H |
H |
H |
H |
L |
H |
H |
H |
H |
H |
L H L H |
H L L L |
H H L L |
H |
H |
H |
H |
H |
L |
H |
H |
H |
H |
L H H L |
H L L H |
H H L H |
H |
H |
H |
H |
H |
H |
L |
H |
H |
H |
L H H H |
H L H L |
H H H H |
H |
H |
H |
H |
H |
H |
H |
L |
H |
H |
H L L L |
H L H H |
H H H L |
H |
H |
H |
H |
H |
H |
H |
H |
i |
H |
H L L H |
H H L L |
H L H L |
H |
H |
H |
H |
H |
H |
H |
H |
H |
L |
H L H L |
H H L H |
H i H H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H L H H |
H H H L |
H L L H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H H L L |
H H H H |
H L L L |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H H L H |
L L L L |
L L L L |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H H H L |
L L L H |
L L L H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H H H H |
L L H L |
L L H H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
H |