Fall 2020
Digital 2
Name
Written Exercise 6: Ripple Counters
1. Using a 7493 construct a sequential /12 counter.
14
1
2
3
U1
CKA
CKB
R0(1)
R0(2)
QA
QB
QC
QD
12
9
8
11
7493
2. Using two 7492 construct a non-sequential /24 counter.
14
1
6
7
U1
CKA
CKB
R0(1)
R0(2)
7492
QA
QB
QC
QD
12
11
9
8
14
1
6
7
U2
CKA
CKB
R0(1)
R0(2)
7492
QA
QB
QC
QD
12
11
9
8