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Digital Electronics

Digital Electronics
The most suitable gate for comparing two bits is

 X-OR
 OR
 AND
 NAND

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Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 15
 4
 16
 7

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Digital Electronics
Why encoder is used in the digital electronics ?

None of these
 To convert coded information into non coded form
 It is used to separate address bus and data bus
 To convert non coded information into coded form

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Digital Electronics
A signed integer has been stored in a byte using 2’scomplement format. We wish to store the same integer in 16-bit word. We should copy the original byte to the less significant byte of the word and fill the more significant byte with

 Complement of the MSB of the original byte
 0
 1
 Equal to the MSB of the original byte

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

27
21
19
12

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Digital Electronics
Number of 2 input multiplexers need to construct a 210 inputs multiplexer is _________

 32
 1023
 129
 9

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