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Digital Electronics

Digital Electronics
Which of the following is known as a mod-2 adder?

 X-NOR gate
 X-OR gate
 NAND gate
 NOR gate

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Digital Electronics
Which of the following gates cannot be used as an inverter?

 AND
 X-NOR
 NOR
 NAND

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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)
 (i) and (iii)
 (ii) and (iv)

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Digital Electronics
A 10 bit A/D conveter is used to digitize an analog signal in the 0 to 6 volt. The maximum peak to ripple voltage that can be allowed in the D.C. supply voltage is

  6 mV.
 5 mV.
 10 mV.
  5.85 mV.

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Digital Electronics
A binary number system is of base ________

 10
 4
 2
 1

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Digital Electronics
A 15-bit Hamming code requires

 5 parity bits
 none of these.
 15 parity bits
 4 parity bits

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