The mod-5 counter shown in figure counts through states Q₂ Q₁ Q₀ = 000, 001, 010, 011 and 100.

(a) Will the counter lockout if it happens to be in any one of the unused states?

(b) Find the maximum rate at which the counter will operate satisfactorily. Assume the propagation delays of flip-flop and AND gate to be t_F and t_A

The advantage of using a dual slope ADC in a digital voltmeter is that

Figure shows a mod-K counter, Here K is equal to

The K-map for a Boolean function is shown in figure. The number of essential prime implicants for this function is