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Digital Electronics

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

  Modem.
 Telephone lines.
 Coaxial cables.
 Microwave systems.

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Digital Electronics
In which of the following codes do the successive characters differ in only 1-bit position?

 cyclic code
 binary code
 2421 code
 8421 code

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Digital Electronics
For checking the parity of a digital word, it is preferable to use

 X-OR gates
 AND gates
 NAND gates
 NOR gates

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Digital Electronics
In the boolean algebra, a variable has ________ different state(s)/value(s).

 3
 2
 4
 1

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Digital Electronics
Which of the following gate is a two-level logic gate

EXCLUSIVE OR gate
OR gate
NAND gate
NOT gate

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Digital Electronics
How the digital signals is transmitted through a single conductor ?

 Parallel
 Serial
 Analog
None of these

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