The life cycle of a system engineering: LCA

The presentation includes the life cycle phases of system engineering.

1. Industrial Engineering and
Productivity Management
Presentation On
System Life Cycle

Dhiraj Patil
214216021

2. System Life Cycle
System life cycle is a series of stages that are worked through during the
development of a new system.
Need of System Life Cycle:

To upgrade the current system

To survive in the growing market

To cope up with the increasing demand

To improve the quality

To change without any chaos, disruption & inefficiency

3. Stages in System Life Cycle
•Identify problems with the current system
•Carry out a feasibility study
•Analyse the new system’s requirements
•Design the new system
•Build the new system
•Test the new system
•Produce documentation for the users
•Implement the new system
•Evaluate the new system
•Maintain the new system

4. Fact Finding

Concerned with facts of current system
There are 4 main ways

Interviews

Questionnaries

To observe how job is done at the moment

Study documents-reports, printouts, etc.

5. Objectives of new system

Lower costs

Operations processed faster

Improved efficiency

Fewer mistakes with orders

Fewer staff needed to work order

Better stock control

6. Costs associated

Cost of developing a system

Equipment costs

Operation Costs

Personnel costs

Installation costs

7. Definition

Define new system

Why new system is required

Why to invest huge cost to develop a new
system

8. Feasibility study

Analyze alternative solutions

Assessment of the practicality of a proposed project

Cost associated with the new system

To analyze enough budget is available to develop the new
system

How long will it take to develop a new system

Does the company have in-house skills or do they
outsource

Technical feasibility

9. Design & Build the new sytem

Assessing the problem

Research

Ideas

Prototypes

Final design

Testing

10. Implementation of new system
There are 3 different ways of implementing a
system:
Direct: One begins as the other finishes
Advantage: Happens as quickly as possible
Disadvantage: Disastrous effect if problem not

found in testing

11. Phased: Introduced in different parts
Advantage: Time to fully test
Disadvantage: Takes long time to introduce full
system
Parallel: Run both the systems together while
new one is tested
Advantage: System can be tested quickly
Disadvantage: Tasks need to be done twice

12. Evaluation and identification of
problem with new system

Does the system still satisfy the objective

If not, identify the problems associated

Return to first step & design a new system

13. Maintenance
There are three kinds of maintenance needed
I.Corrective Maintenance: Deals with the problems
identified after installation
II.Adaptive Maintenance : This type of maintenance
occurs due to external influence or strategic changes in the
company itself
III.Perfective Maintenance: This type of maintenance
deals with the minor changes in the system over the period of
time

14. THANK YOU