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What is Overview of 8255 Programmable Interface about?

The 8255A is a programmable I/O chip used with Intel microprocessors. It has three 8-bit ports (PORT A, PORT B, and PORT C) that can be configured for input or output in different modes. PORT C can be split into two 4-bit sections. The ports are divided into two groups that can each be independently programmed. The chip has three operation modes - basic I/O, strobe I/O, and bi-directional bus mode. It is programmed by the CPU to interface peripheral devices to the system bus in different configurations.

Author

Praveen Singh

Language

EN