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1.1 Systems Architecture - Coggle Diagram
1.1 Systems Architecture
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1.3 Embedded systems
An embedded system is a computer that is built into another piece of equipment designed to have a specific function
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where a task is simple but needs to be reliable to control a limited range of resources such as timers or actuators
The programs are held in Read Only Memory (ROM) it cannot be easily changed. An embedded system executes programs that are written specifically for the tasks .
and these programs are written to use the least possible memory and for them to execute as quickly as possible
As with all computer systems there is likely to be a user interface for example a microwave or washing machine has buttons although some will have no interface at all.
There is a limited operating system that does not need loading when a device is turned on as it is all stored in ROM, this operating systems will only be able to run a single application.
Other embedded systems might rely on gathering information from the environment such as central heating system that reacts to time and temperature