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everyone in this video i am going to explain how to modify the content of the flag register through 8085 assembly language programming but before that first let us understand the concept behind it so we know that in 8085 microprocessor the flag register is an 8 bit register where the most docHub bit is the sign bit and the next bit is the 0 bit then it is not defined and after that this is the auxiliary carry bit and then after that it is not defined then it is your parity bit then next bit is not defined and the least docHub bit is your carry bit now suppose i want to modify the flag register in such a way that the zero flag will be reset okay that means i want to make sure that after the program the zero flag will be equals to zero okay so for that what i will do so simply i will perform and operation logical and operation with a particular bit pattern equals to 1 0 1 1 1 1 1 1 so why have chosen this bit pattern because i we know that whenever we perform and operation of a