Embedded System

---

An embedded system is an electronic system that is designed to perform a specific, dedicated function.

• systems can be:
  • as small and simple as a microcontroller in an intravenous drip-rate mete
  • or as large and complex as an industrial control system managing a water treatment plant
• used in various specialized applications
  • e.g.,
    • home appliances
    • smartphones and tablets
    • automotive systems
    • industrial automation
    • medical devices
    • aerospace and defense
• originally designed to operate within a closed network
  • the elements of the network are all known to the system vendor
  • there is no connectivity to wider computer data networks
• needs to interact within a computer data network, require special considerations to make in terms of the network design and support, especially regarding security
• Industrial internet of things (IIoT) systems prioritize:
  • safety first
  • availability and integrity over confidentiality
• are static environments
  • do not allow or require frequent changes
  • whereas a PC is dynamic
    • user can add or remove programs and files, install new hardware, upgrade OS