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In Figure 1, the value of Z when X = 1 and Y=0 is?   ...

Computer Studies
WAEC 2020

In Figure 1, the value of Z when X = 1 and Y=0 is?   

 

 

  • A.   0.        
  • B. 1.      
  • C. 10.        
  • D. 11.
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Correct Answer: Option B
Explanation

The diagram and the table above serve as guards in answering the above question.

X= 1 , Y= 0
XY = 0
NAND output = 1

Therefore Z = 1


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