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Digital Electronics

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

  Modem.
 Coaxial cables.
 Microwave systems.
 Telephone lines.

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Digital Electronics
In which code do the successive code characters differ in only one position?

 Gray code
 8421 code
 Hamming code
 XS-3 code

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Digital Electronics
"What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease"

C & D
A & B
A & D
B & C

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Digital Electronics
A gate is enabled when its enable input is at logic 0. The gate is

 none of these
 NOR
 AND
 NAND

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Digital Electronics
In LSI, the number of gate circuits per chip is

 100 to 9,999
 100 to 999
 1000 to 10,000
 < 10,000

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Digital Electronics
Which one of the following is 2’s complement of -68?

 11000100
 01111100
 10111100
 00111100

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