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Saturday, December 15, 2007

Characteristics Of Embedded Systems

Embedded computing systems generally exhibit rich functionality—complex functionality is usually the reason for introducing CPUs into the design. However, they also exhibit many non-functional requirements that make the task especially challenging:

• Real-time deadlines that will cause system failure if not met;
• Multi-rate operation
• In many cases, low power consumption
• Low manufacturing cost, which often means limited code size.
• Must be efficient
• Energy efficient
• Code-size efficient (especially for systems on a chip)
• Run-time efficient
• Weight efficient
• Cost efficient
• Dedicated towards a certain application
Knowledge about behavior at design time can be used to minimize resources and to maximize robustness
• Dedicated user interface (no mouse, keyboard and screen)
• Hybrid systems (analog + digital parts).

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