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Digital Electronics

Digital Electronics
Which of the following is not a transmission medium?

 Telephone lines.
 Coaxial cables.
  Modem.
 Microwave systems.

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Digital Electronics
The binary code of (21.125)10 is

10101.001
10100.111
10100.001
10101.01

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Digital Electronics
X OR X' will result

 1
 X'
 X
 0

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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

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

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Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 NAND
 OR
 NOR
 AND

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

27
19
12
21

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