1.1.3 Embedded systems Flashcards
What is an embedded system
An embedded system is a computer system with a dedicated function within a larger mechanical system.
State the typical properties of embedded systems when compared to general purpose computers
Low power consumption
Small size
Rugged operating systems
Low cost per unit
State a disadvantage of an embedded system
An embedded system has limited processing resources which makes them more difficult to program and interact with.
What are advantages of embedded systems
(Explain the benefits of using an embedded system rather than a general purpose computer, in a microwave)
As they’re dedicated to a single task, embedded systems are:
usually easier to design (e.g. microwaves can be made more compact)
cheaper to produce (which can reduce the sale price of the e.g. microwave)
more efficient at doing their task than a general purpose computer
they are more reliable than general purpose computers (microwave is less likely to break)
How can design engineers optimise embedded systems
Design engineers can optimise embedded systems to reduce:
The size of the product
The cost of the product
Increase its reliability for the given task.
Give some examples of embedded systems
c.g.p.
Dishwasher
MP3 Player
Digital thermometer
Washing machine
Manufacturing machinery
computer science document
Microwave
Sat Nav
craig n dave
Traffic Lights
Domestic appliances
Factory equipment
Engine management systems
Hospital equipment
Explain 2 benefits of using embedded systems over general purpose computers in a microwave [4]
Embedded systems are far smaller than general purpose computers(1) which means microwaves can be made more compact(1)
Embedded systems are cheaper to produce than general purpose computers (1) which can reduce the costs/sale of microwaves(1)
Embedded systems tend to be more reliable than general purpose computers (1) which means that microwaves are less likely to break.(1)
