Electronics and Communication Engineering - Digital Electronics

16. 

"Micro-program" is

A. the name of the source program in microcomputer
B. the set of instructions indicating the primitive operations in 1 system
C. the general name of 'MACRO's' in assembly language programming
D. the name of programs of very small size

Answer: Option B

Explanation:

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17. 

The number of programmable 16 bit registers of 6800 are

A. 2
B. 3
C. 4
D. 5

Answer: Option B

Explanation:

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18. 

In 8085 microprocessor, if interrupt service requests have been received from all of the following interrupts, then which one will be serviced first?

A. RST 5.5
B. RST 6.5
C. RST 7.5
D. None

Answer: Option C

Explanation:

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19. 

In floating point representation, the number of bits of mantissa is

A. 10
B. 9
C. 8
D. 7

Answer: Option A

Explanation:

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20. 

The clock shown in figure has a frequency of 6 MHz. The frequency of the Q output will be

A. 12 MHz
B. 24 MHz
C. 3 MHz
D. 1.5 MHz

Answer: Option C

Explanation:

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