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Digital Electronics

Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

  8.
 16.
  255.
 256.

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Digital Electronics
In Boolean algebra, OR is represented by

 /
 ×
 +
 -

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Digital Electronics
A demultiplexer is a

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

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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 1’s complement is used to represent the numbers, then the range will be

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

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Digital Electronics
In an SR latch built from NOR gates, which condition is not allowed

 S=1, R=0
 S=1, R=1
 S=0, R=0
 S=0, R=1

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Digital Electronics
A small circle or dot on top of an IC represents

 Pin2
 Pin1
 Pin13
 Pin14

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