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APaper Presentation

on

Embedded Systems

• Hardware is driven and controlled by software

• Software runs in a computer system (usually a micro-controller)

• Preprogrammed to do specific functionLET US LOOK INTO SOME EXAMPLES……

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Embedded System ???......

• Microcontroller based lock

• Thermostat controller

• Pacemakerwww.tecnocrats.com @ 9540854414

• Communications• Automotive automatic braking• Military applications – Missile

guidance systems• Industrial applications• Robotics

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Applications

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System organization

• Computer design requirement

• System-level requirement

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Embedded system design requirement

• Real time/reactive operation• Small size, low weight• Safe and reliable• Harsh environment• Cost sensitivity

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Computer design requirement

• End product utility• System safety and reliability• Controlling physical systems• Power management

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System-level requirement

• Round robin scheme LOOP:AWAIT TICK;READ S1;TAKE ACTION(S1);READ S2;TAKE ACTION(S2);READ S3;TAKE ACTION(S3);FOREVER

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Software design issues

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Concurrent Programming

FEATURES:

• Micro kernel architecture

• Message based interprocess communication

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QNX-RTOS

WAITING

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PROCESS

RUNNING READY

BLOCKED

EVENT

3 LEVEL ARCHITECTURE:

• Interactive I/O interface• Reactive kernel• Data management

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Synchronous Programming

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• More and more produced processors are used in embedded devices

• New applications like pervasive computing are emerging

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Future Possibilities

• Book(s):EMBEDDED MICROCOMPUTER SYSTEM- REAL TIME INTERFACING : JONATHAN W. VALVANO

• Website(s):1.HTTP://WWW.CS.CMU.EDU2.HTTP://WWW.EMBEDDED.COM3.HTTP://WWW.ESTEREL.ORG4.HTTP://WWW.QNX.COM

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REFERENCES

THANK YOU !!!!!.......

 

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