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【单选题】
(Single choice) 5. A pulse is applied to each input of a 2-input NAND gate. One pulse goes HIGH at t = 0 and goes back LOW at t = 1 ms. The other pulse goes HIGH at t = 0.8 ms and goes back LOW at t = 3 ms. The output pulse can be described as follows:A.
It goes LOW at t = 0 and back HIGH at t = 3 ms.
B.
It goes LOW at t = 0.8 ms and back HIGH at t = 3 ms.
C.
It goes LOW at t = 0.8 ms and back HIGH at t = 1 ms.
D.
It goes LOW at t = 0.8 ms and back LOW at t = 1 ms.
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