Embedded Systems is a kind of systems that are integrated with control unit and specific interfacing to achieve desired output from the assembled system. In other words an embedded system is a controller with a dedicated function within a larger mechanical or electrical system with real-time functioning constraints. It is embedded as part of a complete device including Software, hardware and mechanical parts. Embedded systems
control many devices which we use in day to day life. Most of the Embedded Systems are integrated with Microprocessor and Micro controller.
The main heart of the Embedded systems is Micro-controller, which can be defined as an electronic IC with Rom Memory, i/o Pins, Ram, Timers, Interrupts and Serial port arranged on a single chip.

A common standard class of dedicated processors is the Digital Signal Processor (DSP). Since the embedded system is dedicated to specific tasks, design engineers can optimize it to reduce the size and cost of the product and increase the reliability and performance. Some embedded systems are mass-produced, benefiting from economies of scale.

Applications of embedded systems:

Embedded systems are commonly found in consumer, industrial, automotive, medical, commercial and military applications. Telecommunications systems employ numerous embedded systems from telephone switches for the network to cell phones at the end user. Computer networking uses dedicated routers and network bridges to route data. Consumer electronics include MP3 players, mobile phones, video game consoles, digital cameras, GPS receivers, and printers. Household appliances, such as microwave ovens, washing machines and dishwashers, include embedded systems to provide flexibility, efficiency and features. Advanced HVAC systems use networked thermostats to more accurately and efficiently control temperature that can change by time of day and season. Home automation uses wired- and wireless-networking that can be used to control lights, climate, security, audio/visual, surveillance, etc., all of which use embedded devices for sensing and controlling.