https://itmanual.net/%ec%b9%b4%ec%b9%b4%ec%98%a4%ed%86%a1-pc%eb%b2%84%ec%a0%84-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-%ec%84%a4%ec%b9%98-%eb%b0%8f-%ec%9d%b4%eb%a9%94%ec%9d%bc-%ec%b0%be%ea%b8%b0/