Instrumentation and Electrical (I&E) Technician Practice Test

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A flip-flop that has Q = 0 and Q' = 1 is said to be in which state?

Set

Reset

In a flip-flop, the two outputs are complementary, so Q' is the inverse of Q. When Q is 0 and Q' is 1, the stored bit is 0, which is the reset condition. The set state would have Q = 1 and Q' = 0, hold means maintaining the current stored value, and toggle would switch the value. So the described state is the reset state.

Hold

Toggle

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