The subsequent problems, each of which is independent of the others, deal with the figure below,
If the NC switch is up (i.e., in the position shown) while the NO button is pressed and held down, and then the NC switch is pressed down and released several times (while the button is held down), what is the final value of Y (after the last switch release, with the button still being held down)?
A. it is definitely 0
B. it depends on the previous history of the switch and button states
C. it is definitely 1
Answer: A
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