What is an embedded system?
• A computer system built into a larger device
• Performs a specific function
What are the main characteristics of an embedded system?
• Designed for one task or a small set of tasks
• Built into another device
• Small and efficient
• Reliable
• Often low power
• Minimal or no user interface
Why are embedded systems usually reliable?
• They are designed for a specific job
Why do embedded systems often use little power?
• They are built to be efficient
Why do embedded systems usually have little or no user interface?
• They perform a fixed function automatically
Give examples of embedded systems.
• Washing machine
• Microwave
• Traffic lights
What can an embedded system do in a washing machine?
• Control water temperature
• Control cycle timing
• Control motor speed
What can an embedded system do in a microwave?
• Control cooking time
• Control power level
• Control safety features
What can an embedded system do in traffic lights?
• Control timing sequences
• Respond to sensors
What is the difference between a general-purpose computer and an embedded system?
• A general-purpose computer does many tasks
• An embedded system does one dedicated task
