Programlanabilir Frekans Divider
R1=680R
C1=100pF ceramic
IC4=7430
R2=1K
IC1-2-3=7490
IC5=7400
Truth table BCD for TTL logic
Digit
D
C
B
A
0
0
0
0
0
1
0
0
0
1
2
0
0
1
0
3
0
0
1
1
4
0
1
0
0
5
0
1
0
1
6
0
1
1
0
7
0
1
1
1
8
1
0
0
0
9
1
0
0
1
