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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?

 X-OR
 AND
 NOR
 NAND

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Digital Electronics
The NAND-NAND realization is equivalent to

 OR-AND realization
 NOT-OR realization
 AND-NOT realization
 AND-OR realization

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Digital Electronics
An 8-square is called

 a cube
 a pair
 an octet
 a quad

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Digital Electronics
Why decoder is used in the digital electronics ?

 To convert non coded information into coded form
None of these
 To convert coded information into non coded form
 It is used to separate address bus and data bus

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Digital Electronics
The simplified block diagram of a 10-bit A/D converter of dual slope integrator type is shown in figure. The 10-bit counter at the output is clocked by a 1 Mhz clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this A/D converted is approximately .

 2 KHz.
 250 Hz.
  1 KHz.
 500 Hz.

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Digital Electronics
Why encoder is used in the digital electronics ?

 To convert non coded information into coded form
 To convert coded information into non coded form
 It is used to separate address bus and data bus
None of these

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