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Digital Electronics

Digital Electronics
Which of the following gates cannot be used as an inverter?

 X-NOR
 NOR
 AND
 NAND

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

 Pin13
 Pin14
 Pin2
 Pin1

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Digital Electronics
In Boolean algebra, OR is represented by

 ×
 /
 -
 +

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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

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

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Digital Electronics
A multiplexer is a

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

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Digital Electronics
Which of these circuits have higher gate complexity 1. Carry look ahead adder 2. Ripple carry adder

 none
 1
 2
 both have same

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