Embedded system
- 1. A Paper Presentation on Embedded Systems www.powerpointpresentationon.blogspot.com
- 2. Embedded System ???...... • Hardware is driven and controlled by software • Software runs in a computer system (usually a micro-controller) • Preprogrammed to do specific function Let us look into some examples……
- 3. • Microcontroller based lock • Thermostat controller • Pacemaker
- 4. Applications • Communications • Automotive automatic braking • Military applications – Missile guidance systems • Industrial applications • Robotics
- 6. Embedded system design requirement • Computer design requirement • System-level requirement
- 7. Computer design requirement • Real time/reactive operation • Small size, low weight • Safe and reliable • Harsh environment • Cost sensitivity
- 8. System-level requirement • End product utility • System safety and reliability • Controlling physical systems • Power management
- 9. Software design issues • Round robin scheme Loop: Await tick; Read S1;take action(S1); Read S2;take action(S2); Read S3;take action(S3); Forever
- 11. QNX-RTOS Features: • Micro kernel architecture • Message based interprocess communication
- 12. PROCESS RUNNING READY WAITING EVENT BLOCKED
- 13. Synchronous Programming 3 Level Architecture: • Interactive I/O interface • Reactive kernel • Data management
- 15. Future Possibilities • More and more produced processors are used in embedded devices • New applications like pervasive computing are emerging
- 16. REFERENCES • Book(s): Embedded microcomputer system- real time interfacing : Jonathan W. Valvano • Website(s): 1.http://www.cs.cmu.edu 2.http://www.embedded.com 3.http://www.esterel.org 4.http://www.qnx.com