Electronics and Communication Engineering - Digital Electronics

16. 

The main advantage of hexadecimal numbers is

A. ease of conversion from hexadecimal to binary and vice-versa
B. ease of conversion from hexadecimal to decimal and vice-versa
C. ease of conversion from gray code to binary and vice-versa
D. the use of numbers and alphabets

Answer: Option A

Explanation:

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17. 

T- FF used as a

A. transfer Data switch
B. toggle switch
C. time delay switch
D. none

Answer: Option B

Explanation:

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18. 

A pulse train can be delayed by a finite number of clock periods by using

A. serial in-serial out shift register
B. parallel in serial out shift register
C. serial in-parallel out shift register
D. parallel in parallel out shift register

Answer: Option A

Explanation:

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19. 

The disadvantage of counter type ADC as compared to comparator ADC is that

A. resolution is low
B. conversion time is more
C. circuit is more complex
D. stability is low

Answer: Option A

Explanation:

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20. 

In 8421 Binary coded Decimal system the decimal number 237 is represented by

A. 1000110111
B. 1000111110
C. 001000110111
D. 10010010011

Answer: Option C

Explanation:

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