Electronics and Communication Engineering - Digital Electronics

31. 

Assertion (A): The output of an 8 bit ADC is 80 H if input is 2.5 V

Reason (R): ADC has an output range of 00 to FF H if input range is - 5 to + 5 V

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer: Option C

Explanation:

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32. 

A parity detector can detect

A. single error only
B. single error or odd number of errors
C. two errors
D. single or two errors

Answer: Option B

Explanation:

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33. 

Which of the- following display consumes least amount of power?

A. LCD
B. LED
C. Fluorescent display
D. All display consume same power

Answer: Option A

Explanation:

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34. 

The converter whose conversion time is independent of number of bits is

A. dual stope
B. counter type
C. parallel conversion
D. successive approximation

Answer: Option C

Explanation:

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35. 

Serial input data of 8085 can be loaded into bit-7 of the accumulator by

A. executing a RIM instruction
B. executing RSTI
C. using TRAP
D. none of the above

Answer: Option A

Explanation:

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