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Digital Electronics

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

 AND
 NAND
 X-NOR
 OR

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Digital Electronics
A graphical representation of a products in a truth table is called as

 Mapping
 T-Map
 Graphing
 K-Map

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Digital Electronics
An 8-square eliminates

 3 variables
 2 variables
 4 variables
 8 variables

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Digital Electronics
Which of the following is not a transmission medium?

 Coaxial cables.
  Modem.
 Microwave systems.
 Telephone lines.

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Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 0 and 4
 1 and 3
 1 and 4
 0 and 3

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 25, 9 and 57 respectively
 -6, -6 and -6 respectively
 -25, -9 and -57 respectively
 -7, -7 and -7 respectively

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