Electronics and Communication Engineering - Microprocessors

36. 

The word size accessible at a time from the memory subsystem depends on

A. width of data bus
B. width of address bus
C. width of control bus
D. both (b) and (c)

Answer: Option A

Explanation:

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37. 

In windows the middle button of mouse is not used.

A. True
B. False

Answer: Option A

Explanation:

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38. 

Microprocessor 8088 has

A. 16 bit registers and 16 bit data bus
B. 8 bit registers and 8 bit data bus
C. 8 bit registers and 16 bit data bus
D. 16 bit registers and 8 bit data bus

Answer: Option D

Explanation:

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39. 

Assertion (A): In 8085, P flag is for parity checking.

Reason (R): If the result of ALU has even parity, P flag is set and if the result has odd parity, P flag is reset.

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 correct R is wrong
D. A is wrong R is correct

Answer: Option A

Explanation:

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40. 

Which of the following is not a special purpose peripheral?

A. Programmable DMA controller
B. Programmable Floppy disc controller
C. Programmable Hard disc controller
D. Programmable CRT controller

Answer: Option A

Explanation:

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