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Digital Electronics

Digital Electronics
Which of the following shows the correct attachment of even parity bit to the data 00001001?

 100001001
 000001001
 000010010
 000010011

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Digital Electronics
The momentary change in the output/state of the flip-flops is known as

 unstable state
 trigger
 inverter
 tri-state

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be 0 V and –5 V
 may be negative or positive
 must necessarily be positive
 must necessarily be negative

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Digital Electronics
A switch-tail ring counter is made by using a single D-FF, the following circuit is

  D FF.
  S-R FF.
  T FF.
  J-K FF.

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Digital Electronics
The voltage levels for positive logic system

 may be positive or negative
 must necessarily be positive
 must necessarily be negative
 must necessarily be 0 V and 5 V

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

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

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