For i/o mode of 8255 ,if ....-, the word is taken as a bit set/reset word

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The microprocessor contains the arithmetic, logic, and control circuitry necessary to perform the functions of a digital computer's central processing unit. A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer's central processing unit (CPU). The IC is capable of interpreting and executing program instructions and performing arithmetic operations. The microprocessor... Show more

For i/o mode of 8255 ,if ....-, the word is taken as a bit set/reset word