Question

d. The asynchronous modulus counters examined in this activity were all designed using D flip-flops. In Design Mode create a 3-Bit Mod-6 Up Counter (0-5 count) using the 74LS76 J/K flip-flop.

Answer 1

Kindly check the attachment.

Step-by-step explanation:

We have the maximal count = 2^n - 2. Although, normally we can use 2^n = 2^3= 8( which means MOD-8 counter, but we need MOD-6). Therefore, the maximum count should be 6 - 1 Which is equal to 5. The total number of states is 6, then with these we can define our MOD-6

So, using;

Values of Qc, Qb, Qa and their respective Decimal equivalent are given below;

0 0 0 0

0. 0 1 1

0 1 0 2

0 1 1 3

1 0 0 4

1 0 1 5

1 1 0 6*(reset).

Thus, 0 - 5 => MOD-6 counting.

Check the attachment for the logical diagram

After the simulation, run the circuit to test if it is working efficiently.