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Which of the following expressions is no...

Which of the following expressions is not true ?

A

`bar(bar(A).B)=A+barB`

B

`bar(bar(A).B)=A+barB`

C

`bar((bar(A.B)),(bar(A.B))`=A.B

D

`bar(1)+bar(1)=1`

Text Solution

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The correct Answer is:
D
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ALLEN-SEMICONDUCTORS-Part-3(Exercise-2)
  1. The arrangement shown in figure performs the logic function of a/an….g...

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  2. You are given two circuits as shown in Fig. 14.38, which consist of NA...

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  3. Which of the following expressions is not true ?

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  4. Which of the following relation is valid in Boolean algebra :-

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  5. Given below are four logic gates symbols. NAND, NOR and OR are respect...

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  6. The output Y of the combination of logic gates shown is equal to

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  7. Which of the following relation is valid in Boolean algebra :-

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  8. The output of given logic circuit is

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  9. The following configuration of gate is equivalent to

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  10. To get an output 1 from the circuit shown in the figure, the input mus...

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  11. The circuit shown here is logically equivalent to :-

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  12. Which of the following will have an output of 1 :-

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  13. The logic symbols shown here are logically equivalent to :-

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  14. The combination of the gates shown in the figure produces

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  15. The combination of the gates shown will produce

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  16. Which of the following represents correctly the truth table of configu...

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  17. The truth table for the following combination of gates is :-

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  18. The combination of the gates shown represents :-

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  19. Which of the following relations is valid for Boolean algebra :-

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  20. In the following circuit, the output Y for all possible inputs A and B...

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