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Sensor Computer Actuator Building thermostat
Automobile cruise control
R/C helicopter heading lock [switch to white board] 9 Interface
The interface to a component is a specification describing what goes in and what comes out
• It does not specify what happens inside (it’s abstract, remember?) Good interface design is the key to drawing block diagrams
• It can take several tries to get it right What can go in and out?
• Power, information, data, motion, force, water, electricity…
electrical energy energy storage:
battery mechanical energy energy conversion:
motor mechanical energy energy transmission:
gears physical force:
Consider our thermostat example
• What are the most abstract way to represent what is on...
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This document was uploaded on 03/02/2014 for the course CS 128 at Rice.
- Fall '11