Embedded Systems - Introduction

 

System is a way of working, performing tasks according to the fixed set of rules, an arrangement in which all the units combined to do a task together following a set of rules.

Embedded Systems composed of application software, hardware and operating system which may be independent system or combinational system. A software is embedded into the computer hardware which makes the computer system to performs tasks dedicated for specific application or a variety of application or specific part of an application which in turn is a part of large system.

Embedded system provides high reliability and real-time computation ability. It is a microcontroller-based control system to perform a specific task of operation. A embedded system major components are:

  1. Hardware – Physical components comprising of microcontroller integrated circuit, power supply, LEDs, LCD displays, sensors, resistor and capacitors, speakers, etc.
  2. Application Software – Allows the user to perform varieties of application to be run on an embedded system by changing the code installed in it.
  3. Real Time Operating System – RTOS – Supervises how the embedded system works. RTOS acts as an interface between hardware and software.


Design steps required for the development of Embedded System:

Design steps required for embedded system are different from the design process any other electronic systems. It also may differ from application to application. A basic flow chart representing the design steps of an embedded systems.

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