1.1.3 Embedded systems

What is an embedded system?

• a small computer sysem built into a larger device to provide a means of control

• is a built for a specific purpose that cannot be changed

What are the features of embedded systems?

• single microprocessor

• programs stored on ROM

• performs specific and limited pre programmed tasks

• used to control a device with simple inputs

• one purpose - cannot install new software

• low cost per unit

• typically very reliable - low risk of bugs developing

• slower CPU speed than general purpose

• They tend to require less power. Some devices run from batteries.

What are some examples of embedded systems?

• washing machine

• dishwasher

• traffic light

• electronic calculators

• GPS

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