embedded sytem routroy

Real Time Embedded Systems

Module1 . Architecture of Embedded Systems

Unit 1 Concepts and Examples

Unit 2 Reverse Engineering of a Cell Phone

Unit 3 Reverse Engineering of a Digital Camera

Unit 4 Generic Architecture of an Embedded System

Unit 5 Components of Embedded Systems


Concepts and Examples

What makes a Real Time Embedded System ? What made it possible ?

VLSI Sensor and Actuator Technology BaBery Technology Microwave Devices

What is the future ?


Embedded Systems at Work

http://www.redsalt.com/service/automotive-systems


A short list of embedded systems

Anti-lock brakes Auto-focus cameras Automatic teller machines Automatic toll systems Automatic transmission Avionic systems Battery chargers Camcorders Cell phones Cell-phone base stations Cordless phones Cruise control Curbside check-in systems Digital cameras Disk drives Electronic card readers Electronic instruments Electronic toys/games Factory control Fax machines Fingerprint identifiers Home security systems Life-support systems Medical testing systems

Modems MPEG decoders Network cards Network switches/routers On-board navigation Pagers Photocopiers Point-of-sale systems Portable video games Printers Satellite phones Scanners Smart ovens/dishwashers Speech recognizers Stereo systems Teleconferencing systems Televisions Temperature controllers Theft tracking systems TV set-top boxes VCRs, DVD players Video game consoles Video phones Washers and dryers


What is an embedded system and why at all we should make a disJncJon and hence need a deniJon

A general deniJon of embedded systems is: embedded systems are compuJng systems with Jghtly coupled hardware and soMware integraJon, that are designed to perform a dedicated funcJon. The word embedded reects the fact that these systems are usually an integral part of a larger system, known as the embedding system. MulJple embedded systems can coexist in an embedding system.


common characterisJcs of embedded systems

Single-funcJoned Executes a single program, repeatedly

Tightly-constrained Low cost, low power, small, fast, etc.

ReacJve and real-Jme ConJnually reacts to changes in the systems environment

Must compute certain results in real-Jme without delay


CharacterisJcs

Dependable Reliability: the probability that the system would not fail

Maintainability: Probability that the failed system can be repaired

Availability: Probability that the system is available

Safety: The failing system will not cause any harm Security: the property that the condenJal data remains condenJal


CharacterisJcs

Ecient Energy Code-Size Run-Time eciency Weight Cost

Dedicated User Interfaces Ubiquitous CompuJng Ambient Intelligence Disappearing Computer Example ABS systems in automobiles

Real Time Constraints A guaranteed system response has to be explained without staJsJcal

arguments

Hybrid Both Analog and Digital Both Low and High Frequency Both Sensors and actuators


Simplied Design Flow


Design Technology The manner in which we convert our concept of desired

system funcJonality into an implementaJon

embedded sytem routroy

Documents