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Digital Electronics

Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 1 and 3
 0 and 4
 0 and 3
 1 and 4

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either

 an AND or an OR
 an OR or an X-OR
 an AND or a NOR
 a NAND or a NOR

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Digital Electronics
The 2s complement of 17 is

  101111.
 111110.
 110001.
 101110.

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

 4
 2
 1
 3

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

AND gate
None of these
OR gate
NOT gate

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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
 12
 11
 13

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