EMBEDDED SYSTEM

EMBEDDED SYSTEM

ABSTRACT:

An embedded system can be described as one consisting of a single processor, associated peripherals, and software used for specific purpose. Embedded system is also defined as the hardware and software that is embedded in a large device or system. It typically refers to a device, which runs general-purpose applications. It performs a specific repetitive task and is typically, instructions on a microchip. High-profile embedded chips are scalable, generate small amounts of heat, and consume less power.

As microprocessors have become smaller and cheaper more and more products have microprocessors “embedded” in them. Products such as VCRs, digital watches, elevators, automobile engines, thermostats, industrial control equipment, and scientific and medical instruments are driven by these microprocessors and their software. The term embedded system to mean any computer system hidden in any of these products. Software for embedded systems must handle many problems beyond those found in application software for desktop or mainframe computers. Embedded systems often have several things to do at once. They must respond to external events. They must cop with all unusual conditions with out human interventions. Their work is subjected to dead lines.
As computer industry has moved towards smaller systems over the last decade or so, embedded systems have also moved along with this trend.

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