Exercise: Microprocessors

Questions for: Microprocessors

In which of the following logical group instructions of 8085 is the addressing mode 'immediate'?
A:
ANA r
B:
ANA M
C:
ANI data
D:
XRA r
Answer: C
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Assertion (A): Microprocessors 8086 and 8088 are very similar in organisation and have identical instruction sets.

Reason (R): If clock speed is same the execution time of 8088 and 8086 are exactly equal.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is correct R is wrong
D:
A is wrong R is correct
Answer: C
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In which of the following instructions of 8085 are the contents of accumulator complemented?
A:
STC
B:
CMC
C:
CMA
D:
RAL
Answer: C
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In Pascal an array declaration provides information to the Pascal processor to enable it to
A:
identify the variable as an array name
B:
reserve memory locations to store all the components of array
C:
check the values computed for subscripts expressions during program execution with the specified lower and upper limits of subscripts
D:
all of the above
Answer: D
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Which of the following is a valid variable in FORTRAN 77?
A:
3 A
B:
ALPHA -3
C:
ALPHA 3
D:
BALPHAC
Answer: C
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