The edition of this text has been written to initiate the newcomer to Real Time operating system - RTOS Integration, one of the fastest growing fields in the engineering world. The RTOS's has a restricted asset limitations for Wireless Sensor Network. Virtual memory performs a noteworthy part in the Wireless sensors. Enhance the Size of the virtual memory is a major issue for creating sensor network Architecture design. Virtual memory is upheld by means of a compiler's support. Coverage includes: 1. RTOS design interface; 2. Fundamentals of WSN Platform for Real Time RTOS; 3. Integration of RTOS.