Electronics and Communication Engineering - Digital Electronics

16. 

The recently-introduces CD-ROM PC by Head Start Technologies Co. of New York enables users to view or play __________ .

A. vast amounts of text
B. graphics
C. music
D. all of the above

Answer: Option D

Explanation:

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17. 

In 8085 microprocessor, what is the length of A-register?

A. 6 bits
B. 8 bits
C. 12 bits
D. 16 bits

Answer: Option B

Explanation:

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18. 

How is inversion achieved using EX-OR gate?

A. Giving input signal to the two input lines of the gate tied together
B. Giving input to one input line and logic one to the other line
C. Giving input to one input line and logic one to the other line
D. Inversion cannot be achieved using EX-OR gate

Answer: Option C

Explanation:

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19. 

For the DAC in the given figure VO=

A. 10 V
B. 5 V
C. 4 V
D. 8 V

Answer: Option A

Explanation:

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20. 

The difference between sequential and combinational circuits is

A. Combinational circuits store bits
B. Combinational circuits have memory
C. Sequential circuits store bits
D. Sequential circuits have memory

Answer: Option D

Explanation:

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