1e41f4b71Sopenharmony_ci# Running an Image 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## Starting the System 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciAfter the image is burnt and the development board is restarted, the system automatically starts. If the following page is displayed on the screen of the development board, the system is running properly. 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**Figure 1** System startup effect 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci## Running a Hello World Program 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci1. When the system is running, start the serial port tool (for example, PuTTY), set the baud rate to **1500000**, and connect to the device. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci  18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci2. Enable the serial port, enter the **helloworld** command in any directory (for example, the root directory of the device) and press **Enter**. If the message "Hello World!" is displayed, the program runs successfully. 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci  22
