Electronics and Communication Engineering - Digital Electronics

6. 

Which of the following correctly declares a pointer to an array of intergers in C?

A. int * P [20]
B. int * P
C. int (* P) [20]
D. int * (P [20])

Answer: Option C

Explanation:

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7. 

With 2's complement representation, the range of values that can be represented on the data bus of an 8 bit microprocessor is given by

A. -128 to 127
B. -128 to +128
C. -127 to 128
D. -256 to 256

Answer: Option A

Explanation:

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8. 

In a modem digital computer, a subtractor in normally not used because

A. subtractors are very expensive
B. the design of a subtractor is very complex
C. the adder is geared for doing subtraction
D. most of the programs do not require subtraction

Answer: Option C

Explanation:

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9. 

In which one of the following types of analog to digital convertors the conversion time is practically independent of the amplitude of the analog signal?

A. The dual slope integrating type
B. Successive approximation type
C. Counter ramp type
D. Tracking type

Answer: Option B

Explanation:

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10. 

In 8085 microprocessor, which of the following is not vectored interrupt?

A. RST 5.5
B. RST 6.5
C. RST 7.5
D. INTR

Answer: Option D

Explanation:

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