Objectives Explain the purpose and give examples of embedded systems

Embedded systems Do these devices have inputs, processes and outputs? Could they be classed as computers? Why? Why not?

Embedded computers An embedded computer is a single microprocessor that includes RAM, ROM and a CPU An embedded computer is frequently used to control a device using simple controls

Embedded Systems Without embedded systems, a digital device would not be able to perform specific functions For example, a dishwasher wouldn’t know how to heat the water, or a satnav wouldn’t know how to communicate with a satellite What embedded functions do cars use?

Uses for embedded systems Embedded systems are custom made to meet particular needs. They are used in: Military Space exploration Medical equipment Automobiles Factories As well as most homes and organisations

Embedded systems in cars Is a car an embedded system? No, as it is not a single computing device it is a complex machine made up of several embedded systems and mechanical devices What embedded systems might you find in a car?

Designing an embedded system Imagine you are designing a new robotic toy for children. Work in pairs to plan the inputs, processes and outputs would like your robot to have. Remember to be specific!

Pop Quiz Are these statements TRUE or FALSE ? Embedded systems are usually larger than general purpose computers. Embedded systems are easy to program. Embedded systems are energy efficient.

Using an embedded system Advantages: Disadvantages: As it is written for specific hardware it often uses low energy consumption Smaller in size They are robust and durable Difficult to program and requires specialist knowledge If a problem occurs with the system it is difficult to repair

Exam Practice Basic question… Mid-range question… High-level question… What is an embedded system? [1 mark] Mid-range question… Give two examples of devices that contain embedded systems. [2 marks] High-level question… Explain two benefits of using an embedded system in a washing machine instead of a general purpose computer. [4 marks]