For the circuit of Fig. 6.14, give three alternatives for a mod-8 counter (i.e., the count evolves through a sequence of 8 distinct states). (a) Using an AND gate and load input. (b) Using inputs and...

For the circuit of Fig. 6.14, give three alternatives for a mod-8 counter (i.e., the count evolves through a sequence of 8 distinct states).

(a) Using an AND gate and load input.

(b) Using inputs and load control input.

(c) Using a NAND gate and the asynchronous clear input.

A digital system has a clock generator that produces pulses at a frequency of 125 MHz. Design a circuit that provides a clock with a cycle time of 64 ns.