1. Systems Eighth Grade Technology Mr. Ruddle

2. What is a system?

3. A system is a group of interrelated parts that work together to accomplish a goal. What does “interrelate” mean? What is a system?

4. When things interrelate, it means that they make connections with multiple things. Usually, in a system, the interrelated parts depend on each other. What does “interrelate” mean?

5. Open-Loop Systems Closed-Loop Systems There are two types of systems

6. Open-Loop Systems continuously interact with the environment or humans. Usually, an open-loop system does some function, then stops until it receives a command again. Closed-Loop Systems operate and self-regulate without interaction with the humans except for initial input. Usually, a person enters an initial setting and the system completes the same operation until an new setting is entered. What’s the difference?

7. Open-Looped Computer Washing Machine Dish Washer Closed-Looped Air Conditioner Hot Water Heater What are some examples?

8. Universal Systems Model New Knowledge Controls / Sensors C R I T E R I A Feedback Goal Inputs Processes Outputs Material Tools/Machines Energy Money Knowledge People Time Actions Results Purpose Expectations

9. System Interrelate Open-Loop System Closed-Loop System Goal Criteria Inputs Processes Outputs Feedback Vocabulary