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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?

 1:1
 2:3
 1:2
 2:1

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Digital Electronics
An 8-square is called

 a quad
 an octet
 a pair
 a cube

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Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 NAND
 AND
 OR
 X-NOR

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Digital Electronics
A + Ā is equal to

 1
 Ā
 0
 A

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Digital Electronics
What logic function is produced by adding an inverter to each input and output of an OR gate?

 X-OR
 NOR
 NAND
 AND

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

 1.1 V.
  1 mV.
 1 V.
 0.01 V.

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