UGC NET CS 2014 Dec – paper-3
September 19, 2024Computer-Networks
September 19, 2024UGC NET CS 2014 Dec – paper-3
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Question 6
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Specify the contents of the accumulator and the status of the S, Z and CY flags when 8085 microprocessor performs addition of 87 H and 79 H.
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11, 1, 1, 1
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10, 0, 1, 0
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01, 1, 0, 0
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00, 0, 1, 1
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Question 6 Explanation:
Since MSB of 8-bit result is zero, it means the number is positive. So Sign flag will be “0”.
Since 8-bit result contain zero only so Zero flag will be “1”.
Since addition operation is resulting into a carry so Carry flag will be “1”.
Correct Answer: D
Question 6 Explanation:
Since MSB of 8-bit result is zero, it means the number is positive. So Sign flag will be “0”.
Since 8-bit result contain zero only so Zero flag will be “1”.
Since addition operation is resulting into a carry so Carry flag will be “1”.