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Digital Electronics

Digital Electronics
Which of the following operations is commutative but not associative?

 NAND
 X-OR
 AND
 OR

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Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 OR
 NOR
 NAND
 X-OR

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Digital Electronics
An AND gate can be imagined as

 transistors connected in paralle
 switches connected in series
 transistors connected in series
 switches connected in parallel

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Digital Electronics
The number of rows in the truth table of a 4-input gate is

 8
 16
 4
 12

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Digital Electronics
Counter is a

  both.
  sequential circuit.
  none.
  combinational circuit.

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Digital Electronics
The address bus with a ROM of size 1024 × 8 bits is

 8 bits
 16 bits
 12 bits
 10 bits

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