1. A Paper Presentation on Embedded Systems

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

5. System organization

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

10. Concurrent Programming

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): Website(s):
Embedded microcomputer system- real time interfacing : Jonathan W. Valvano
Website(s): 1. 2. 3. 4.

17. THANK YOU !!!!!