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Digital Electronics

Digital Electronics
Which of the following is known as a mod-2 adder?

 X-OR gate
 NAND gate
 NOR gate
 X-NOR gate

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Digital Electronics
The 2s complement of 17 is

 110001.
 101110.
 111110.
  101111.

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Digital Electronics
The NOR gate can function as a NOT gate if

 one input is set to 1
 inputs are left open
 one input is set to 0
 all inputs are connected together

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Digital Electronics
Counter is a

  combinational circuit.
  sequential circuit.
  none.
  both.

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Digital Electronics
In VLSI, the number of gate circuits per chip is

 50,000 to 99,999
 10,000 to 99,999
 > 10,000
 < 10,000

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Digital Electronics
X + X.Y = ?

 X
 1
 Y
 0

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