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Digital Electronics

Digital Electronics
What is the radix of octal number system ?

 8
 2
 16
 10

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Digital Electronics
Which of the following operations is commutative but not associative?

 AND
 X-OR
 OR
 NAND

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Digital Electronics
F’s complement of (2BFD)Hex is

 D403
 C403
 E304
 D402

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Digital Electronics
Which of the following is 2’s complement of +12?

 00001000
 01110011
 00000011
 00001100

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 four input NAND gates only
None of these
 three 3-input OR gates and one 3-input AND gate
 three 3-input NAND gates and one 3-input NOR gate

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Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

6
32
64
128

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