Embedded systems
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What is an embedded system?
An embedded system is small computer system built in a piece of equipment designed to preform a specific function
Name some examples of embedded systems in technology.
Vehicles, cameras, medial equipment, aircraft, vending machines, oven, fridges, mobile phones, satellite navigation devices, televisions, digital clocks and lifts
What are the main characteristics of embedded systems?
Reliability and minimal resources such as ROM, timers, sensors and actuators.
Where is the program which controls the equipment held in that cannot be changed?
ROM
What language it it typically written in?
Typically written in machine-efficient language
What language may be used for some critical parts of the program?
Assembly language
Why does it have a very limited operated system?
Because it does not have to be loaded when the machine is turned on as it is held in ROM.
How many applications in the operating system able to run?
1
What are embedded system user interfaces like.
Very simple like buttons and some don’t have an interface
Why are embedded systems usually written in machine-efficient language?
so that it uses a minimum amount of memory and executes as fast as possible
What does ROM stand for?
read-only memory