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Digital Electronics

Digital Electronics
Truth table is used to express

 Boolean addition
 Boolean expression
 Boolean map
 Boolean matrix

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Digital Electronics
A combinational circuit can be designed using only

 OR gates
 NOR gates
 AND gates
 OR and X-NOR gates

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 2:3
 1:1
 1:2
 2:1

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Digital Electronics
AND operation is equivalant to

 Intersection
 Union
 Both B and C
 Division

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Digital Electronics
The 1’s complement of 11010111 is

 00101000
 11101000
 10101000
 10101000

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

32
64
128
6

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