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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?

  6.
 24.
  10.
 12.

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Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NAND gate?

 X-OR
 OR
 AND
 NOT

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Digital Electronics
A bubbled AND gate is equivalent to a

 OR gate
 X-OR gate
 NOR gate
 NAND gate

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 0,y = 0,z = 1
 w = 1,y = 1,z = 0
 w = 1,y = 1,z = 1
 w = 0,y = 1,z = 1

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Digital Electronics
In Boolean algebra, OR is represented by

 /
 ×
 +
 -

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 +2n-1,-(2n-1-1)
 None of these
 +(2n-1-1),-2n-1
 +(2n-1-1),-(2n-1-1)

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