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Digital Electronics

Digital Electronics
A device which converts BCD into octal is called

 demultiplexer
 decoder
 encoder
 code converter

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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?

 1:1
 2:3
 1:2
 2:1

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Digital Electronics
The main criterion in the design of a digital circuit is reduction of

 weight
 cost
 volume
 size

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Digital Electronics
A boolean function can be transformed into logical ________.

 graph
 diagram
 matrix
 map

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Digital Electronics
The binary number designations of the rows and columns of the K-map are in

 Gray code
 binary code
 BCD code
 XS-3 code

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Digital Electronics
To get an excess-3 code from BCD code

 0110 is added
 0011 is subtracted
 0110 is subtracted
 0011 is added

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