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Digital Electronics

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

 129
 32
 1023
 9

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Digital Electronics
A 32 × 10 ROM contains a decoder of size

 5 × 32
 32 × 10
 10 × 32
 32 × 32

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

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Digital Electronics
The output of a NAND gate is low

 only when all the inputs are low
 only when at least one input is low
 only when at least one input is high
 only when all the inputs are high

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

 -128 to 127
 -128 to 128
 -256 to 256
 -256 to 255

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Digital Electronics
A multiplexer is a

 1-to-N device
 1-to-1 device
 N-to-N device
 N-to-1 device

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