6. The diagram shows an RS flip-flop with single-pole double-throw switches conn

Question

6. The diagram shows an RS flip-flop with single-pole double-throw switches connected to the Set and Reset inputs. The switch is connected to either a 0 state (ground) or to the 1 state (+5v). If a 1 state is supplied to the S input with a 0 at the R input, the output at Q will be: A. anyone's guess as the previous state is not known. -B. -C. the 1 state. the 1 state only if the clock input is at the 1 state. the 0 state if the clock input is at the 1 state. the O state. D. E. RS flip-flop 0 RESET Q

Explanation / Answer

Given diagram represents a RS flip-flop.

We know for a RS flip-flop, the characteristics equation is

Q(n+1) = S + R'Q(n)

given S= 1 and R= 0 so we can write

Q(n+1)= 1 always

Hence option(B) is correct

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