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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

 4
 1
 3
 2

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Digital Electronics
Which of these sets of logic gates are designated as universal gates?

 NOR, NAND, XNOR.
 OR, NOT, AND.
 XOR, NOR, NAND.
 NOR, NAND.

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 9
 10
 6
 12

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 AND-AND
 AND-OR
 XOR-NAND
 NOR-OR

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Digital Electronics
An X-OR gate gives a high output

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

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Digital Electronics
The parity of the binary number 11011001 is

 odd
 even
 same as the number of zeros
 not known

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