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Question

The combinations of the NAND gates shown hereunder are equivalent to
16554.png


A
an OR gate and an AND gate respectively
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B
an AND gate and a NOT gate respectively
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C
an AND gate and OR gate respectively
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D
an OR gate and an NOT gate respectively
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Solution

The correct option is B an OR gate and an AND gate respectively
Truth tables for logic (1) and (2) are shown below:
Input       Output
$$(0,0)$$$$0$$
$$(1,0)$$$$1$$
$$(0,1)$$$$1$$
$$(1,1)$$$$1$$

Input Output
$$(0,0)$$$$0$$
$$(1,0)$$           $$0$$
$$(0,1)$$$$0$$
$$(1,1)$$$$1$$

The truth tables are equivalent to OR and AND gate.

Physics

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