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EC501:Embedded system

What is the Embedded Systems?

An Embedded system is

a computer that has been built to

solve only a few very specific

problems.Source:wikipedia.org/wiki/Embedded_system

http://simple.wikipedia.org/wiki/Computerhttp://simple.wikipedia.org/wiki/Computer

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EC501:Embedded systemAn embedded

system is a specialpurpose system thatis used to performone or few

dedicated functions.

Simply, we can call any

electronic device that

has a computer system

embedded inside it an

embedded system.

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EC501:Embedded systemEmbedded systems

are made to performfew tasks only, afterimplementation you

cant use them foranother purposes.

Ex. You cant watch

movies using themicroprocessor of your

microwave oven!!

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EC501:Embedded systemExamples:

Digital and analog televisions

Set-top boxes (DVDs, VCRs, Cable boxes)

Personal digital assistants (PDAs)

MP3s and iPod'sKitchen appliances (refrigerators ,microwave

ovens)

Telephones/cell phonesCameras

Global positioning systems

And many others.

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EC501:Embedded system

1. We do so by using microcontrollers

(or microprocessor based systems).

2. Or simply by using the digital circuits

that perform the function we want.

SO.. HOW DO WE IMPLEMENT THEM?

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EC501:Embedded system

WHAT IS A MICROCONTROLLER?

Its a full computer system on

a chip, even if its resources are

far more limited than of a

desktop personal computer.

Designed for stand aloneoperations.

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EC501:Embedded system So.. Whats the difference between a microcontroller

and a microprocessor system?

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EC501:Embedded systemA microcontroller has a processor and many peripherals

integrated with it on the same chip, like a flash memory,RAM, I/O ports, serial communication ports, ADC Etc.

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EC501:Embedded system

A timer module to allow the MCU to perform tasks forcertain time periods.

A serial I/O port to allow data to flow between the

MCU and other devices such as a PC or another MCU.

An ADC to allow the MCU to accept analog inputs for

processing.

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EC501:Embedded system

But a microprocessor cant do all the functions

of a computer system on its own, and needs

another circuits to support it like:I/O devices, RAM, ROM, DMA controllers, Timers,

ADC, LCD drivers.. Etc.

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EC501:Embedded systemCOMPARISON

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EC501:Embedded system

Did u know me?I m the part of

embedded systems