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Digital Electronics

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

 2
 4
 3
 1

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either

 an OR or an X-OR
 a NAND or a NOR
 an AND or a NOR
 an AND or an OR

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Digital Electronics
The boolean algebra is mostly based on

 Boolean theorem
 De Morpans theorem
 Standard theorem
 De Morgans theorem

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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

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

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Digital Electronics
The most suitable gate for comparing two bits is

 OR
 X-OR
 NAND
 AND

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Digital Electronics
The data bus width of a ROM of size 2048 × 8 bits is

 12
 8
 16
 10

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