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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.
  6.
 12.
 24.

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Digital Electronics
What is the minimum number of NAND gates required to realize an X-OR gate?

 5
 4
 6
 3

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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 2’s complement is used to represent the numbers, then the range will be

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

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Digital Electronics
8421 code is

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

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Digital Electronics
The NAND gate is AND gate followed by ___________.

OR gate
AND gate
None of these
NOT gate

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Digital Electronics
When will be the output of an AND gate is LOW ?

 When all inputs are HIGH
 When all input is LOW
 When any input is HIGH
 When any input is LOW

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