Thesis Project: “Design and Realization On-Board Data Handling Based on Real Team Operating System (RTOS) for Nano Satellite” An On-Board Data Handling (OBDH) of university nanosatellite project (Tel-USat) designed using ARM Cortex M3 STM32F103 and realized on PC/104 board with the implementation of RTOS for support system. The system is also provided by several sensors to analyze telemetry housekeeping data.