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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?

 2:1
 1:1
 2:3
 1:2

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Digital Electronics
The set of which logic gates is designated as universal gate?

 NOT, OR , AND.
 XNOR, NOR, NAND.
 XNOR, NOR, NAND.
  NOR , NAND.

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

 6
 9
 8
 3

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Digital Electronics
Unit distance code is the other name of

 sequential code
 self-complementing code
 XS-3 code
 cyclic code

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Digital Electronics
The time required for a gate to change its output is called as

 Decay time
 propagation time
 start time
 run time

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Digital Electronics
Which number system has a base of 16

 None
 Hexadecimal
 Decimal
 Octal

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