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Digital Electronics

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

 NAND
 AND
 X-OR
 NOR

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Digital Electronics
A Binary number system has how many digits.

 2
 10
 0
 1

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 three 3-input NAND gates and one 3-input NOR gate
 four input NAND gates only
None of these
 three 3-input OR gates and one 3-input AND gate

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Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 16
Base 8
Base 3
Base 10

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Digital Electronics
Which GATE IS CALLED INEQUALITY COMPARATOR?

 4. NOT
 3. XOR
 2. AND
 1. NOR

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Digital Electronics
Counter is a

  none.
  both.
  sequential circuit.
  combinational circuit.

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