Embedded Systems and their Common Characteristics

• Embedded system


  An embedded system is a small computer that forms part of a larger system, device or machine.
• Embedded systems


  • They do one job pretty much and nothing else
  • They are not easily reprogrammable
• Characteristics of embedded systems

  • Memory and CPU are on the same chip
  • More ROM than RAM
  • Usually real-time devices (respond immediately to inputs)
• ROM (read-only memory) is used as secondary storage in some embedded systems as it is cheap.
• Embedded systems are designed to do very specific, critical jobs, so real-time response is important