Electronics and Communication Engineering - Digital Electronics

46. 

What does the B register contain after the first MOV B, A has been executed?

A. 40 H
B. 60 H
C. 80 H
D. 80 D

Answer: Option A

Explanation:

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47. 

Program counter in a digital computer

A. counts the number of program run in the machine
B. counts the number of times a subroutine is called
C. counts the number of times the loops are executed
D. points the memory address of the current or the next instruction to be executed

Answer: Option D

Explanation:

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48. 

__________ switch, a T flip-flop is used as __________ switch, a T flip-flop is used as switch

A. toggled, delay
B. delay, toggle
C. set reset
D. reset, set

Answer: Option B

Explanation:

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49. 

In a three variable K map four adjacent cells give

A. single variable term
B. two variable term
C. three variable term
D. either (a) or (b)

Answer: Option A

Explanation:

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50. 

In 2 out of 5 code, decimal number 8 is

A. 11000
B. 10100
C. 11000
D. 1010

Answer: Option B

Explanation:

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