☆ understand the basic function of operating system;
☆ be familiar with the different types of operating systems;
☆ identify some operating systems,such as Windows 10,Linux,etc.;
☆ apply your knowledge when using your operating system. CLhwu+Ev09bMW4mm5/RhaLlcI7UlfFQ5HCTxfNowfyT6za/SiWJ/um+sbgUa60yY