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Digital Electronics

Digital Electronics
A device which converts decimal number into BCD form is called

 code converter
 decoder
 multiplexer
 encoder

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 -7, -7 and -7 respectively
 -25, -9 and -57 respectively
 -6, -6 and -6 respectively
 25, 9 and 57 respectively

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Digital Electronics
10’s complement of 63325600 is

 366744399
 633256600
 36674400
 36774400

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Digital Electronics
The main equation for a D flip flop is

 Q=D
 Q=D'
 Q=0
 Q=1

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Digital Electronics
The number FF in base-16 systems will be equal to ________ in binary system.

 11101110
 10101010
 10011001
 11111111

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 0,y = 1,z = 1
 w = 1,y = 1,z = 1
 w = 1,y = 1,z = 0
 w = 0,y = 0,z = 1

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