3.1.3 Embedded Systems (B01)
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embedded system
are small computers that form part of a larger system – they are built into the device. Embedded systems are more specialised computers, they typically perform a single/dedicated/specific task. (often more efficient)
opposite of embedded system
general purpose computer
embedded system are computer?
YES
embedded system vs general purpose computer
embedded system - contained within larger device - specialised to specfic tasks - dont require user - not many resources gpc - its own device - many tasks - require a user - lots of resources
how is an embedded system different from an electric torch
it can process data
pros of embedded systems
Their limited number of functions means they are cheaper to design and build. They can be made smaller too. They tend to require less power. Some devices run from batteries. They do not need much processing power. They can be built using cheaper, less powerful processors.
cons of embedded systems
They lack the flexibility of non-embedded computer. It can be difficult to update their software (e.g. the software in a car). However, some embedded devices, e.g. fitness trackers, can often be upgraded by connecting the device to a PC and installing the new software.