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Digital Electronics

Digital Electronics
8421 code is

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

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Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 AND
 NOT
 OR
 NAND

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

 Microwave systems.
  Modem.
 Telephone lines.
 Coaxial cables.

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Digital Electronics
What is the gray code for the binary 101011?

 110101
 111110
 011111
 101011

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

 cyclic code
 Hamming code
 Gray code
 XS-3 code

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Digital Electronics
(1D)16 in BCD 8421 code is

 00011101
 00011111
 00101001
 00100100

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