Embedded Systems

An embedded system is a computer system with the real-time computing constraints .It is a microprocessor-based system that is incorporated into a device to monitor and control the functions of the components of the device.
They are the part of every modern electronic component. Embedded systems are the low power consumption units that are used to run specific tasks for example remote controls, RFID tags , sensors, networking hardware such as switches, routers, modems, PDAs, etc.
Generally, an embedded system comprises of the following components:
Power Supply
Memory
Processor
Timers
Output/Output circuits
Serial communication ports
SASC (System application specific circuits)
The software of an embedded system is written to execute a particular function that is written in a high-level setup and then compiled down to offer code that can be stuck within a non-volatile memory in the hardware. An embedded system software is intended to keep in view of the following three limits
Convenience of system memory
Convenience of processor’s speed
When the embedded system runs constantly, there is a necessity to limit power dissipation for actions like run, stop and wake up.

Applications of embedded systems: Embedded systems find numerous applications in various fields such as digital electronics, telecommunications, computing network, smart cards, satellite system and so on.
Conclusion
The basic requirement of embedded system differ significantly from general purpose computers. The main goal of an embedded system developer is to design a low cost system, which performs the desired tasks, without failing.
Further more, embedded systems are rapidly becoming a catalyst for change in the computing, data communication, telecommunications, industrial control, entertainment and many sectors. Automatic systems in any field will be useful and will save the people and organizations.