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Digital Electronics

Digital Electronics
How many flip flops are required to build a binary counter circuit to count from 0 to 1023?

  10.
 12.
 24.
  6.

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Digital Electronics
A gate is enabled when its enable input is at logic 1. The gate is

 NOR
 OR
 NAND
 none of these

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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?

 90 mV.
 900 mV.
 30 mV.
 300 mV.

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Digital Electronics
The implicants which will definitely occur in the final expression are called

 redundent prime implicants
 essential prime implicants
 selective prime implicants
 prime implicants

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Digital Electronics
The main equation for a D flip flop is

 Q=0
 Q=D'
 Q=1
 Q=D

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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
 X-OR
 NOR
 NAND

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