Electronics and Communication Engineering - Digital Electronics

21. 

In 8085 microprocessor, if instruction RST is written in a program then the program will jump to location

A. 0020 H
B. 0024 H
C. 0028 H
D. 002 CH

Answer: Option C

Explanation:

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22. 

figure given below shows the internal schematic of a TTL AND-OR Invert (AOI) gate, For the input shown in the given figure, the output Y is

A. 0
B. 1
C. AB
D. AB

Answer: Option A

Explanation:

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23. 

In 8085 microprocessor, the RST 5.5 interrupt service routine start from location

A. 0020 H
B. 0024 H
C. 0028 H
D. 002 CH

Answer: Option D

Explanation:

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24. 

Which memory requires periodic recharging?

A. All ROMS
B. All RAMS
C. Static RAM
D. Dynamic RAM

Answer: Option D

Explanation:

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25. 

The hexadecimal number given below represent decimal numbers which are multiples of DC, C8, BE, 46, IE

A. 2
B. 6
C. 7
D. 10

Answer: Option C

Explanation:

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