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mediumMCQGATE IN 2015 Question Paper (01-Feb-2015) (Shift 2)General
2 marks (โˆ’0.66)

In the circuit shown, the switch is momentarily closed and then opened. Assuming the logic gates to have equal non-zero delay, at steady state, the logic states of X and Y are

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  1. A
    X is latched, Y toggles continuously
  2. B
    X and Y are both latched
  3. C
    Y is latched, X toggles continuously
  4. D
    X and Y both toggle continuously

Solution & Step-by-step Explanation

When switch is closed, X = 0 and Y = 1

When switch is opened, X = 1 and Y = 0

Now the truth table for switching operations is
XY
01
10
01
10
X and Y both toggles continuously.

Practice this question

Try it yourself before checking the explanation above.

In the circuit shown, the switch is momentarily closed and then opened. Assuming the logic gates to have equal non-zero delay, at steady state, the logic states of X and Y are

A picture containing objectDescription automatically generated
A
X is latched, Y toggles continuously
B
X and Y are both latched
C
Y is latched, X toggles continuously
D
X and Y both toggle continuously

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