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Digital Electronics

Digital Electronics
Which of the following is a self-complementing code?

 cyclic code
 Gray code
 Hamming code
 XS-3 code

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Digital Electronics
AND operation of (79)10 & (-56)10 is

 48H
 50H
 42H
 08H

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Digital Electronics
If in a base b number system, 54/4=13, the base of the number is

 7
 8
 9
 6

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

 Telephone lines.
 Coaxial cables.
 Microwave systems.
  Modem.

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Digital Electronics
A bubbled OR gate is equivalent to a

 NOR gate
 AND gate
 X-OR gate
 NAND gate

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Digital Electronics
Which of the following gates is known as a coincidence detector?

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

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