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Digital Electronics

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

 Coaxial cables.
 Telephone lines.
 Microwave systems.
  Modem.

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

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

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 NAND
 NOR
 X-NOR
 AND

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Digital Electronics
When an input signal 1 is applied to a NOT gate, the output is ___________.

None of these
1
Either 0 & 1

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Digital Electronics
Counter is a

  none.
  sequential circuit.
  both.
  combinational circuit.

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 255
 -256 to 256
 -127 to 127
 -128 to 127

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