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Digital Electronics

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?

 2:3
 1:2
 2:1
 1:1

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

 Both A and B
 Sequential
 Combinational
 Conversion

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Digital Electronics
A bubbled OR gate is equivalent to a

 AND gate
 NOR gate
 NAND gate
 X-OR gate

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Digital Electronics
The fast logic family is

  TTL.
  DRL.
  TRL.
  ECL.

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Digital Electronics
An AND gate can be imagined as

 switches connected in parallel
 transistors connected in series
 switches connected in series
 transistors connected in paralle

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Digital Electronics
The state of a flip-flop can be switched by changing its ________ signals.

 clearing
 triggering
 input
 output

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