Electronics and Communication Engineering - Digital Electronics

41. 

The circuit shown in figure converts

A. BCD to binary code
B. binary to excess-3 code
C. excess-3 to Gray code
D. gray to binary code

Answer: Option D

Explanation:

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42. 

The microprograms provided by a manufacturer to be used on his microprogrammed computer are generally called

A. software
B. network
C. firmware
D. hardware

Answer: Option C

Explanation:

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43. 

Out of multiplexer and demultiplexer, which has select inputs?

A. Multiplexer only
B. Demultiplexer only
C. Both multiplexer and demultiplexer
D. None

Answer: Option C

Explanation:

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44. 

What is the direction of address bus?

A. Unidirectional into μp
B. Unidirection out of μp
C. Bidirectional
D. Mixed direction, i.e., some lines into up and some others out of μp

Answer: Option B

Explanation:

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45. 

Direct-memory-access channel facilitates data to move into and out of the system.

A. without subroutine
B. with equal time delay
C. without programme intervention
D. on first come first serve basis

Answer: Option C

Explanation:

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