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DIGITAL ELECTRONICS

Digital Electronics
A combinational circuit can be designed using only

 AND gates
 OR and X-NOR gates
 OR gates
 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?

 X-OR
 OR
 X-NOR
 AND

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

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

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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
 inputs are left open
 one input is set to 0

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Digital Electronics
An X-OR gate gives a high output

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

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