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Digital Electronics

Digital Electronics
A device which converts 2421 code into 8421code is called a

 code converter
 code decoder
 coder
 code encoder

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

 1,00,000 to 10,00,000
 50,000 to 99,999
 > 50,000
 > 1,00,000

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Digital Electronics
If a counter having 10 flip flops is initially at 0, What count will if hold after 2060 pulses?

  000 000 1100.
 000 001 1100.
  000 000 1000.
 000 000 1110.

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 1:2
 2:1
 1:1
 2:3

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Digital Electronics
A 15-bit Hamming code requires

 none of these.
 4 parity bits
 15 parity bits
 5 parity bits

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Digital Electronics
What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively?

 X-OR
 X-NOR
 OR
 AND

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