https://blog.gongquiz.com/2021/05/05/%eb%8b%a4%ec%9d%8c-%ec%a4%91-%ec%9d%b8%ed%85%94-%ea%b3%84%ec%97%b4-cpu%ec%97%90-%ec%82%ac%ec%9a%a9-%ea%b0%80%eb%8a%a5%ed%95%9c-%eb%a0%88%eb%93%9c-%ed%96%87%eb%a6%ac%eb%88%85%ec%8a%a4%ec%9d%98/