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Digital Electronics

Digital Electronics
8421 code is

 non-weighted code
 alphanumeric code
 weighted code
 self-complementing code

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Digital Electronics
When will be the output of a NOT gate is HIGH ?

 the input is HIGH and LOW
 the input is LOW
None of these
 the input is HIGH

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Digital Electronics
Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

 300 mV.
 90 mV.
 900 mV.
 30 mV.

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

 AND
 NAND
 NOR
 X-NOR

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Digital Electronics
One bit full adder has ________ inputs

 4
 any number
 2
 3

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

 Coaxial cables.
 Telephone lines.
  Modem.
 Microwave systems.

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