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What is 8255 and 8259 Interface Overview about?

The document provides a detailed overview of the 8255 Programmable Peripheral Interface, 8259 Programmable Interrupt Controller, and 8253 Programmable Interval Timer, including their functionalities, operational modes, and interfacing with microprocessors like the 8085 and 8086. It describes the internal architecture, control signals, and data transfer mechanisms for each device, emphasizing their roles in parallel data transfer, interrupt management, and timing operations. Additionally, it includes schemat

Author

mme72144

Language

EN