In 8085 microprocessor which of the following flag(s) is (are) affecte

1.	In 8085 microprocessor which of the following flag(s) is (are) affected by an arithmetic operation ?1. AC flag Only2. CY flag Only3. Z flag Only4. AC, CY, Z flags
Answer» Correct Answer - Option 4 : AC, CY, Z flags The correct answer is option 4 All the Carry flag (CY), Auxiliary carry flag (AC) and Zero flag (Z) are affected when an arithmetic operation is performed. Auxiliary carry flag (AC): In the addition of two 8 bit hexadecimal numbers, if a carry occurs when the LS hex digits of the two numbers are added, then such a carry is called Auxiliary carry and AC flag is set. Carry flag (CY): Carry flag is set when two 8 bit numbers are added and the result has a carry. Zero flag (Z): Zero flag is set when any arithmetic operation is performed and the result is 00H.

In 8085 microprocessor which of the following flag(s) is (are) affected by an arithmetic operation ?1. AC flag Only2. CY flag Only3. Z flag Only4. AC, CY, Z flags

Answer» Correct Answer - Option 4 : AC, CY, Z flags

The correct answer is option 4

All the Carry flag (CY), Auxiliary carry flag (AC) and Zero flag (Z) are affected when an arithmetic operation is performed.

Auxiliary carry flag (AC):

In the addition of two 8 bit hexadecimal numbers, if a carry occurs when the LS hex digits of the two numbers are added, then such a carry is called Auxiliary carry and AC flag is set.

Carry flag (CY):

Carry flag is set when two 8 bit numbers are added and the result has a carry.

Zero flag (Z):

Zero flag is set when any arithmetic operation is performed and the result is 00H.

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