Systems

You probably use a system each morning to get ready for school!

Creating a Mustang

DefinitionsSystems:

A group of items forming a whole. An orderly way of achieving a goal.

Subsystems A secondary part of a larger system. Small systems which are combined to

make up complex systems.

System: Human Body

System: Automobile

System: House

System Loop

INPUT PROCESS OUTPUT

Systems can be classified into two major groupings – Open Loop System & Closed Loop Systems

Open Loop systems are those systems that have to be manually adjusted because they lack automatic feedback.Turning on/off the water faucets at home.Adjusting the speed of an automobile using the foot pedal.

Closed loop systems are those systems that can monitor (watch) and adjust themselves without manual feedback.Supermarket doorsCruise control on modern carsThermostat in a house for heating/cooling

Components

InputProcessOutputMonitorCompare and Adjust

Input

Input is the information, ideas, and activities that we need to provide to determine what we need to accomplish.

Can be a command.

Process•The part of the system during which something is done.•The “action” part of the system.

Output

The result of the system’s process.

Monitor/Feedback

Information about the output of a system Used to monitor how a system is working Used to make adjustments to the system

Compare and Adjust

Compare output to input. Make adjustments as necessary to achieve desired output.

Adjustments made by people – Open System

Adjustments made automatically – Closed system

Open Systems

Systems that have to be constantly adjusted by YOU

Closed Systems

Systems that can monitor (watch) and adjust themselves without you being involved.

Now its your turn!