Rys. 4.248. Dekada zliczająca wstecz w kodzie 8421
a
.BA h
0C\0Q 01 1 1 10
00 |
1 |
0 |
0 |
1 |
01 |
1 |
0 |
0 |
1 |
11 | ||||
10 |
1_ |
0 |
„__ |
NM DC\ |
00 |
D 01 |
6 11 |
10 |
00 |
0 |
0 |
T |
0 |
01 |
T |
0 |
1 |
0 |
11 | ||||
10 |
3 |
0 |
_ |
c |
Db=AB+ACO+ABC
-.BA u0
lfc^.00 01 11 10
00 |
m |
0 |
.0 |
0 |
01 |
0 |
0 |
0 |
0 |
11 | ||||
10 |
0 |
1 |
O^t 00 01 U 10
00 |
0 |
0 |
0 |
0 |
01 |
0 |
1 |
1 |
1 |
11 | ||||
10 |
3 |
0 |
c |
Dc=BC+AC+ACD
dd=ao+aM
Rys. 4.249. Dekada licząca wstecz w kodzie 8421
a) tablice Karnaugha, b) schemat logiczny