Life cycle assessment

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This project Life Cycle assessment aims at learning about how to conduct a life cycle assessment of a given product ( in this project computer mouse is the product) using Cambridge Engineering Selector (CES) software. In this document History of the mouse as of when it was invented and what are the developments that took place in years, composition of mouse, raw materials used in the mouse, the manufacturing process and the by products and waste during the manufacturing and extraction of the computer mouse will be discussed. Later on with the help of Cambridge Engineering selector we use the application of Eco audit tool and provide it necessary input into it to achieve the necessary output.

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The output is the outcome or the result of the project. In addition to that each and every component of the computer mouse will be discussed in detail and the environmental hazards related to the production of each of them will be discussed.


I would like to express my deep appreciation to my supervisor Mr. N.HART, for his guidance, review, suggestions, kindness, valuable time, criticisms and comments throughout my Project.

I am most grateful and thankful to university technical staff Michael Britton for his encouragement from the very beginning of the study and guiding me throughout my course.

I remain indebted and my love goes to my family for helping me accomplish this thesis. My parents have been a constant source of support-emotional, moral and financial during my post graduate years and this thesis would certainly not have existed without them.


History of computer mouse:

Dr. Douglas Engelbart has invented the first device that came out as mouse in the year1964.During this time the only way the cursor scrolling position in the computer screen was by using the arrow keys on the keyboard and it was really inefficient and awkward to use. It incorporates mechanism which is in the form of small brick with one button on top and underneath two wheels and was made by Douglas. The purpose of these wheels is to detect horizontal and vertical movement and on the whole the unit was little bit difficult to use. For viewing the cursor on the monitor The connection to the computer was established by means of a cable so that the motion signals could be sent out electrically. A long cable tail featured like device like a mouse so the name “mouse” came into picture.NASA team tried different methods which enables the cursor to move on the computer screen like the devices Light pens, knee switches and steering wheels, albeit, in testing of these devices Engel arts mouse gained popularity. Engineers thought that the mouse was ideal for drafting and illustration purposes And could build up computer aided designs on the same desk.

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