What is an embedded system?

A special computer system designed to perform a small set of designated tasks.

Embedded markets and applications include:

  • Network devices
  • Mobiles/PDAs and consumer electronics
  • Audio/Video and signal processing
  • Industrial and home automation
  • Aerospace & Defense
  • Automotive

Embedded systems typically use real time operating systems (RTOS). A RTOS has a deterministic behaviour, that is, it responds within a guaranteed amount of time. This behaviour is characterized in terms of jitter, the variability of the system's response time, and latency, the delay between an event and its action.

A hard real time system will always be deterministic, responding with a given latency and a known jitter, while a soft real time system will make a best effort to be deterministic. It is assumed that exceeding the nominal latency or jitter is not catastrophic on a soft real time system.

Linux is a general purpose operating system (GPOS) which can be enhanced to offer soft real time response times, and even hard real time responses for some applications.


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In Brief

At Lindus we are embedded designers passionate about open technologies and its embedded potential.

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