Electronics and Communication Engineering - Digital Electronics

11. 

The internal structure of PL A is similar to

A. RAM
B. ROM
C. both RAM and ROM
D. neither RAM nor ROM

Answer: Option D

Explanation:

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12. 

Start and stop bit do not contain any information but are used in serial communication for

A. error correction
B. error detection
C. synchronization
D. slowing down the communication

Answer: Option C

Explanation:

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13. 

Which of the following parameters is not specified for digital ICs?

A. Gate dissipation
B. Propagation delay
C. Noise margin
D. Bandwidth

Answer: Option D

Explanation:

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14. 

A binary adder has

A. one half adder
B. one half adder and 2 full adders
C. two half adders
D. one half adder and many full adders

Answer: Option D

Explanation:

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15. 

Program counter in a digital computer

A. counts the number of programs run in the machine
B. counts the number of times a subroutine
C. counts the number of time the loops are executed
D. points the memory address of the current or the next instruction

Answer: Option D

Explanation:

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