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Digital Electronics

Digital Electronics
Queue is also known as

 LILO memory
 FIFO memory
 Flash memory
 LIFO memory

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 None of these
 +(2n-1-1),-2n-1
 +2n-1,-(2n-1-1)
 +(2n-1-1),-(2n-1-1)

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Digital Electronics
A gate is enabled when its enable input is at logic 0. The gate is

 AND
 NAND
 NOR
 none of these

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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

 4
 3
 2
 1

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

It is used by everybody
Many digital computers use NAND gates.
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
The Quine– McClusky method of minimization of a logic expression is a (i) graphical method (ii) algebraic method (iii) tabular method (iv) a computer-oriented algorithm The correct answers are

 (ii) and (iv)
 (i) and (ii)
 (iii) and (iv)
 (i) and (iii)

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