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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
The code used for labeling the cells of a K-map is

 octal
 hexadecimal
 8-4-2-1 binary
 gray

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 2:1
 2:3
 1:2
 1:1

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

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

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

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

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Digital Electronics
The parity of the binary number 11011001 is

 same as the number of zeros
 even
 odd
 not known

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