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Digital Electronics

Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 3
 2
 4

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Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 X-OR
 OR
 NOR
 NAND

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Digital Electronics
Consider the operation 24+17 = 40 .What is the correct base of number so that operation is correct?

 10
 13
 12
 11

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Digital Electronics
An X-OR gate gives a high output

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

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Digital Electronics
To get an excess-3 code from BCD code

 0110 is added
 0011 is subtracted
 0011 is added
 0110 is subtracted

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Digital Electronics
Logic circuits are

 analog circuits
 digital circuits
 hybrid circuits
 none of these

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