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Digital Electronics

Digital Electronics
Truth table is used to express

 Boolean map
 Boolean addition
 Boolean expression
 Boolean matrix

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Digital Electronics
Odd parity of a bit stream can be tested using ________ gate.

 AND
 XOR
 OR
 NOR

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Digital Electronics
The output of a NOR gate is high

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

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Digital Electronics
A new Binary Coded Pantry (BCP) number system is proposed in which every digit of a base-5 number is represented by its corresponding 3-bit binary code. For example, the base-5 number 24 will be represented by its BCP code 010100. In this numbering system,the BCP code 100010011001 corresponds to the following number in base-5 system

 4231
 2201
 423
 1324

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Digital Electronics
Which one of the following is 2’s complement of -68?

 00111100
 11000100
 10111100
 01111100

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Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 2
 4
 1
 3

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