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Digital Electronics

Digital Electronics
For checking the parity of a digital word, it is preferable to use

 NAND gates
 AND gates
 X-OR gates
 NOR gates

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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
None of these
 three 3-input OR gates and one 3-input AND gate
 four input NAND gates only

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Digital Electronics
A three-state buffer has the following output states

 High, Low, Float
 1, 0, float
 Both A and B
 Set, Reset, Halt

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Digital Electronics
Counter is a

  sequential circuit.
  both.
  combinational circuit.
  none.

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Digital Electronics
A ROM has a 16-bit address bus. The number of locations in this memory is

 1024
 16
 65536
 32

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

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

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