Question Bank (2 marks) · Q18
Q.Briefly explain Arithmetic instruction.
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Arithmetic instructions perform add, subtract, multiply, divide and increment/decrement operations, updating the status flags.
Arithmetic instructions are the 8051 group that performs numerical calculations. They include ADD and ADDC (add, add with carry), SUBB (subtract with borrow), MUL AB (multiply), DIV AB (divide) and INC/DEC (increment/decrement by one). Most operate through the accumulator A. As they compute, they set or clear the status flags — carry (CY), auxiliary carry (AC) and overflow (OV) — so the program can tes …
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