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Embedded Systems / Definition /

Embedded Systems

  • System is bunch of things put together that serves some goals.

  • Embedded is something stuff together, bunch of parts to do something and achieve some goals.

  • Embedded System is systems with computer embedded inside in them, that has some non computer related functionality.

Embedded Systems Examples

  • Sensor Light Switch
  • Remote Control
  • Termostat

Embedded Systems Requirements

  • Hardware
  • Software
  • Electric Power


  • Digital: is Discrete = Power On/Off
    • [-3, -2, -1, 0, 1, 2, 3]

  • Analog : is continuos Wave
  • Circuit: is Electronic
    • Voltage source to ground

  • Bread Board (Proto-Board): is platform for building prototype circuits.
    • Labor Intensive

  • Printed Circuit Board (PCB): is permanent can not be changed.
    • Machine Intensive

  • Integrated Circuit: can build as many as can.
    • VLSI - throw away, can not be change.

  • Package: Integrated Circuit in a Package
    • Components:
      • (leds, photo diods, resistors, diods, capacitors)

    • Electrostatic Discharge:

  • Memory:
    • Volatile Memory will not keep contents when power goes off.
    • Non-Volatile Memory will keep it contents when when power goes off.

  • Random Access Memory: volatile memory
  • Read Only Memory (ROM): write once, read many
  • EEPROM: Electronicaly Erasable Programable Memory
  • Registers: piece of memory, very fast, very expensive, and close to CPU
  • Clock: