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Digital Electronics

Digital Electronics
What is the Boolean expression for a two-input AND gate ?

 A.B
 A - B
 A & B
 A + B

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Digital Electronics
X = 01110 and Y = 11001 are two 5-bit binary numbers represented in 2’s complement format. The sum of X and Y in 2’s complement format using 6 bits is

 001000
 0001111
 100111
 101001

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Digital Electronics
The voltage levels for positive logic system

 must necessarily be positive
 may be positive or negative
 must necessarily be negative
 must necessarily be 0 V and 5 V

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Digital Electronics
If in a base b number system, 54/4=13, the base of the number is

 8
 6
 9
 7

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Digital Electronics
In digital systems, 1 byte is equal to ________ bit(s).

 2
 8
 1
 4

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Digital Electronics
In Boolean algebra A.A is equal to

 A²
 A
 1
 2A

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