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Digital Electronics

Digital Electronics
AND operation of (79)10 & (-56)10 is

 08H
 48H
 50H
 42H

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Digital Electronics
An exclusive NOR gate is logically equivalent to

 NOT gate followed by a NOR gate
 inverter followed by an X-OR gate
 complement of a NOR gate
 X-OR gate followed by an inverter

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Digital Electronics
1’s complement of 17 is

 10111.
  01110.
 10001.
 11100.

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Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 0011
 1001
 1100
 1000

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Digital Electronics
Which of the following logic circuits is the fastest ?

 RTL.
 TTL.
 DTL.
 All have same speed.

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Digital Electronics
Which circuit is used in between two systems having two different codes

 Both A and B
 Conversion
 Sequential
 Combinational

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