The Pipelined Processors

Introduction

In 1908, Henry Ford started The FORD car manufacturing company. Until 1913, the car manufacturers used to produce one car at a time. In that year, Henry Ford introduced and implemented the assembly line in his car factory

The Assembly Line Concept

An assembly line is a manufacturing process (most of the time called a progressive assembly) in which parts (usually interchangeable parts) are added to a product in a sequential manner to create a finished product much faster than with handcrafting-type methods.

According to Henry Ford:

The principles of assembly are these:(1) Place the tools and the men in the sequence of the operation so that each component part shall travel the least possible distance while in the process of finishing.(2) Use work slides or some other form of carrier so that when a workman completes his operation, he drops the part always in the same place—which place must always be the most convenient place to his hand—and if possible have gravity carry the part to the next workman for his operation.(3) Use sliding assembling lines by which the parts to be assembled are delivered at convenient distances.

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Example: 1- The following Figure depicts the last three stages of the assembly line. Each stage needs twenty time

units to complete. 2- In the traditional method, if the production of a car needs (n=10) stages, where each stage takes T = 20

time units, the the car production would take nT = 10X20= 200 time units. So to produce X=10 cars in this way you need 2000 time units.

3- In this example only the first car takes 200 units to be produced. In other words filling the assembly line stage takes 200 units, and after that we produce a car every twenty units. So producing 10 cars takes

200 + 9X20 =380 time units.

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