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Arithmetic Instructions in MCS-51 - MCQs with Answers
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Microcontrollers & Applications - 8051 Architecture
-06/12/15
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Arithmetic Instructions in MCS-51 - MCQs with Answers
Q1. Which flag allow to carry out the signed as well as unsigned addition and subtraction operations ?
a. CY
b. OV
c. AC
d. F0
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ANSWER: b. OV
Q2. How many bytes are supposed to get occupied while subtracting indirect RAM from an accumulator along with borrow under the execution of SUBB A, @R
i
?
a. 1
b. 2
c. 3
d. 4
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ANSWER: a. 1
Q3. What can be the oscillator period for the multiplication operation of A & B in accordance to 16-bit product especially in B : A registers?
a. 12
b. 24
c. 36
d. 48
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ANSWER: d. 48
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