About

Microprocessor is a controlling unit of a micro-computer, fabricated on a small chip capable of performing ALU (Arithmetic Logical Unit) operations and communicating with the other devices connected to it. It is a programmable multipurpose silicon chip, clock driven, register based, accepts binary data as input and provides output after processing it as per the instructions stored in the memory. So basically a microprocessor takes input from input devices, process it as per instructions given in the memory and produces output.

The notes of Microprocessor below include following topics:

• 8087 Microprocessor

• 8254 Microprocessor

• 8086 Microprocessor

• 8257 Programmable DMA controller

• 8255 Programmable Peripheral Interface

• 8259 Microprocessor

• 8086 Memory Organization