Electronics and Communication Engineering - Microprocessors

21. 

A microprocessor needs memory chips and input-output chip to form a microcomputer.

A. True
B. False

Answer: Option A

Explanation:

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22. 

The maximum number of alphabets/digits or special symbots for character constants in C is

A. 1
B. 2
C. 4
D. 8

Answer: Option A

Explanation:

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23. 

Windows automatically starts CD player when one inserts audio CD in CD-ROM drive.

A. True
B. False

Answer: Option A

Explanation:

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24. 

In 8086 the word address is

A. the address of the least significant byte
B. the address of most significant byte
C. either (a) or (b) depending on the word
D. neither (a) nor (b)

Answer: Option A

Explanation:

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25. 

The instruction MOV r1, r2 in 8085

A. causes contents of registers r2 to be moved to r, and uses register addressing
B. causes contents of registers r1 to be moved to r2 and uses register addressing
C. causes contents of registers r1 to be moved to r2 and uses register immediate addressing
D. causes contents of registers r2 to be moved to r1 and uses register immediate addressing

Answer: Option A

Explanation:

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