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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?

 24.
 12.
  6.
  10.

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Digital Electronics
9’s complement of 52784630 is

 47215369
 48225469
 57316379
 58326479

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Digital Electronics
The most suitable gate for comparing two bits is

 OR
 NAND
 AND
 X-OR

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Digital Electronics
The decimal number 0.246 in binary is

 0.001111
 0.001101
 0.010111
 0.011011

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output is LOW
 the output follow input
 the output is HIGH
 the output follows clock

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Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 1000
 0011
 1001
 1100

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