Basic C Input / Output, Expressions And Functions

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Basic C Input/Output, expressions and functions

Part 1 - Research
What are embedded Systems?
An embedded systems is a computer system with one or more specific tasks within a larger machine or system. Generally at the heart of an embedded system is a microprocessor that would control some input and output devices. Embedded systems often face much stricter constraints than most general purpose computer systems so they are much harder to program[1].

Fig 0 [3]

The main constraints an embedded system may face are[2]:
1)Real time -
Real time is when a system must respond to an event within a strict deadline that would affect the safety or usability of the device.
2)Low power -
Most embedded systems have a limited power supply so they have to save energy while doing their tasks.
3)Low cost -
Some embedded systems are intended to be mass produced and therefore the cost per unit must be optimized often this means getting a ‘less sophisticated’ processor or interface components to do the work needed.
4)Reliability -
Embedded systems are often ingrained deep inside a complex system and it may expensive, impractical or dangerous to repair these devices frequently. Therefore some embedded systems must be as reliable as possible.
5)Computing performance -

6) Size and weight- some embedded systems
Since embedded system are targeted at very specific tasks this makes it much easier to optimize for the particular application than you could with general purpose computer[3].

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