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Embedded systems

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Embedded System is used to design real time system.

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Embedded systems

  1. 1. Embedded System K.Senthil
  2. 2. Embedded System 4. Microprocessor, 6. RAM, 7.Flash Memory
  3. 3. Embedded System  Embedded System is a Computer System with dedicated function that is present inside large electrical or mechanical system.  The common properties of embedded system are low power consumption and low cost of hardware because it is limited to perform single task.  It is based on Microprocessor or Microcontroller.
  4. 4. Varieties of Embedded System  consumer,  cooking,  industrial,  automotive,  medical,  commercial ,  military applications.
  5. 5. Varieties of Embedded System  consumer,  cooking,  industrial,  automotive,  medical,  commercial ,  military applications.
  6. 6. Characteristics  Embedded System are designed to do some specific task.  Embedded system is not always stand alone device.  Program written for embedded system is called as firmware and stored in ROM.
  7. 7. User Interface  User Interface ranges from No Interface to dedicated User Interface that looks like Stand alone System.  Standard Interfaces are buttons, Multi Color LED, Graphic Character LCD with Menu.
  8. 8. Processors  Microprocessor  Processor with dedicated connections for ROM, RAM and Flash  Microcontroller  Everything included in the chip
  9. 9. Peripherals  Embedded System talks with outside world through peripherals  RS 232  USB  MultiMedia Cards  Networks  ADC/DAC
  10. 10. Tools to write program  Developers use compilers, assembler, debugger.  In Circuit Debugger is used to check circuit.
  11. 11. Reliability  Embedded systems reside in large machines so it should be tested more carefully against errors.  Reliability can be assured using following techniques  Watch Dog  Sub System  Limp Nodes  Hypervisor

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