8085 Microprocessor

8085 Microprocessor

Introduction: 

A computer system, as we know it, consists of various components.

They can be broadly classified into three sections:

Processor (µp)

Memory

Input/Output

                                 

The Processor :

• The main function of the processor is to Fetch,Decode and Execute instructions.
• Instructions are a part of the programs.programs are stored in memory.
• Firstly, the microprocessor fetches an instruction from the memory.It then decodes the instruction.This means,it "understands" the binary pattern of the instruction, also called  its opcode.Every instruction when stored in the memory is in its unique binary form,which indicates the operation to be performed.This is called opcode.Upon decoding the opcode, microprocessor understand the operation to be performed and hence "execute" the instruction.This entire process is called an "Instruction Cycle".

The Memory :

• Memory is used to store information.
• It stores two kinds of information....programs and data.

     For example :-

    MS Word is a program.

    Word documents are data.

• Memory is a series of locations.
• Each memory identifies its own unique address.
• Every location contains 1 Bytes(8-bits) of data.

Update soon......