In the keypad application just after the 4 ms mark the simulation imitates the release of the key by changing the column value back to F hex which causes the d output to go into its Hi-Z state. On the next rising clock edge what happens to dav ?

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1.	In the keypad application, just after the 4 ms mark the simulation imitates the release of the key by changing the column value back to F hex, which causes the d output to go into its Hi-Z state. On the next rising clock edge, what happens to dav ?
A.	It goes HIGH.
B.	It goes LOW.
C.	It goes to Hi-Z.
D.	It goes to 1111H.
Answer» C. It goes to Hi-Z.

Discussion

Explore topic-wise MCQs in Boolean Algebra and Logic Simplification .

In the keypad application, just after the 4 ms mark the simulation imitates the release of the key by changing the column value back to F hex, which causes the d output to go into its Hi-Z state. On the next rising clock edge, what happens to dav ?