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Digital Electronics

Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m-1
 2m
 2m-1
 2m+1

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Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 4
 6
 8
 2

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Digital Electronics
Which of the following is a digital device

 Microphone
 Light switch
 Resistance of a material
 Regulator of a fan

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Digital Electronics
If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

 4
 8
 1
 2

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

 size
 cost
 weight
 volume

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +(2n-1-1),-(2n-1-1)
 +2n-1,-2n-1
 +(2n-1-1),-2n-1
 +2n-1,-(2n-1+1)

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