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Digital Electronics

Digital Electronics
What logic function is produced by adding an inverter to each input and output of an OR gate?

 NAND
 NOR
 AND
 X-OR

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

  1 mV.
 0.01 V.
 1.1 V.
 1 V.

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Digital Electronics
The number of digit 1 present in the binary representation of (3 × 512 + 7 × 64 + 5 × 8 + 3) is

 8
 9
 6
 7

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Digital Electronics
To get an excess-3 code from BCD code

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

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Digital Electronics
The code used in digital systems to represent decimal digits, letters, and other special characters such as + , – , . , * , etc. is

 hexadecimal
 octal
 natural BCD
 ASCII

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

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