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Digital Electronics

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

 AND
 NOR
 XOR
 OR

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Digital Electronics
What is the Boolean expression for a two-input AND gate ?

 A + B
 A - B
 A & B
 A.B

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Digital Electronics
The binary number designations of the rows and columns of the K-map are in

 BCD code
 XS-3 code
 Gray code
 binary code

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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

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

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Digital Electronics
A NAND gate is called a universal logic element because

Many digital computers use NAND gates.
It is used by everybody
Any logic function can be realized by NAND gates alone
All the minization techniques are applicable for optimum NAND gate realization

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0011 is added
 0110 is subtracted
 0110 is added
 0011 is subtracted

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