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DIGITAL ELECTRONICS

Digital Electronics
A combinational circuit can be designed using only

 OR gates
 AND gates
 NOR gates
 OR and X-NOR gates

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Digital Electronics
What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively?

 AND
 OR
 X-NOR
 X-OR

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Digital Electronics
The NAND gate can function as a NOT gate if

 all inputs are connected together
 one input is set to 1
 one input is set to 0
 inputs are left open

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Digital Electronics
The NOR gate can function as a NOT gate if

 all inputs are connected together
 one input is set to 1
 one input is set to 0
 inputs are left open

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Digital Electronics
An X-OR gate gives a high output

 for odd decimal value.
 if it has even number of 0s
 if the decimal value of digital word is even
 if there are odd number of 1s

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