1. C.B.KORE POLYTECHNIC
CHIKODI
PAPER PRESENTATION ON:
REAL TIME OPERATING SYSTEM
BY: SHARVANI MUSANDI
V SEM EC

2. CONTENTS
 INTRODUCTION
 CLASSIFICATION
 ARCHITECTURE
 FEATURES OF RTOS
 WIDELY USED RTOS
 CONCLUSION

3. INTRODUCTION
 DEFINATION-
A real-time operating system (RTOS) is
an operating system (OS) intended to
serve real-time application requests
 EXAMPLE

4. CLASSIFICATION
 HARD RTOS-
 These type of RTOS strictly adhere to the
deadline associated with the tasks
 FIRM RTOS-
 These type of RTOS are also required to
adhere to the deadlines
 SOFT RTOS

5. ARCHITECTURE

6. RTOS KERNEL

7. TASK MANAGEMENT

8. SYNCRONIZATION AND COMMUNICATION
FIG (A) SYCHRONIZATION
FIG(B) INTERTASK COMMUNICATION

9. MEMORY MANAGEMENT
 Non-real-time operating systems offer
memory allocation services from what is
termed a Heap
 STACK - Stack management is used during
context switching for TCBs
 RTOS does it by a mechanism known as
Pools

10. OTHER KERNEL FUNCTIONS
 Timer Management
 Interrupt and event handling
 Device I/O Management

11. FEATURES OF RTOS
 MULTITHREADING AND PREEMPT
ABILITY
 THREAD PRIORITY
 INTERTASK COMMUNICATION AND SYNC
 PRIORITY INHERITANCE
 SHORT LATENCIES

12. WIDELY USED RTOS
These are the best known, most widely
deployed real-time operating systems.
 QNX
 RTLinux
 VxWorks
 Windows CE

13. REFERENCES
 http://en.wikibooks.org/wiki/Embedded_Syste
ms/Real-Time_Operating_Systems
 www.onesmartclick.com/rtos/rtos.html
 http://www.engineersgarage.com/articles/rtos
-real-time-operating-system?page=6