Micro Processor and Interfacing Unit 4 (I/O and Memory Interfacing Using 8085/8086 and Communication and Bus Interfacing with 8085/8086 Microprocessor)

I/O and Memory Interfacing Using 8085/8086: memory interfacing, Interrupts of 8085/8086 Microprocessors, 8259A Programmable Interrupt Controller, Programmable peripheral Interface, 8253 Programmable Counter/Interval Timer. Communication and Bus Interfacing with 8085/8086 Microprocessor: Serial Communication Interface, DMA Controller 8257, 8279-Programmable Keyboard and Display I/O Interface, Bus Interface,8089 I/O processor