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Digital Electronics

Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NAND gate?

 AND
 X-OR
 NOT
 OR

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

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Digital Electronics
X = 01110 and Y = 11001 are two 5-bit binary numbers represented in 2’s complement format. The sum of X and Y in 2’s complement format using 6 bits is

 101001
 001000
 0001111
 100111

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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
All the minization techniques are applicable for optimum NAND gate realization
Any logic function can be realized by NAND gates alone

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Digital Electronics
Unit distance code is the other name of

 XS-3 code
 self-complementing code
 sequential code
 cyclic code

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Digital Electronics
A half adder has

 1 input and 2 outputs
 2 inputs and 2 output
 2 inputs and 1 outputs
 1 input and 1 output

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