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Digital Electronics

Digital Electronics
2-out-of-5 code is

 weighted code
 alphanumeric code
 self-complementing code
 non-weighted code

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Digital Electronics
How many entries will be in the truth table of a 3 input NAND gate ?

 6
 8
 9
 3

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 0, B = 0, C = 0
 A = 1, B = 1, C = 1
 A = 1, B = 1, C = 0
 A = 1, B = 0, C = 1

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

 Microwave systems.
  Modem.
 Coaxial cables.
 Telephone lines.

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

 10111100
 11000100
 01111100
 00111100

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 1,y = 1,z = 0
 w = 0,y = 0,z = 1
 w = 0,y = 1,z = 1
 w = 1,y = 1,z = 1

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