https://www.syu.ac.kr/blog/%ec%8b%9c%eb%a6%bd%eb%85%b8%ec%9b%90%ec%b2%ad%ec%86%8c%eb%85%84%eb%af%b8%eb%9e%98%ec%a7%84%eb%a1%9c%ec%84%bc%ed%84%b0-%ed%95%9c%ea%b5%ad%ec%9d%84-%ec%9e%87-it%eb%8a%94-%ea%b8%b0%ec%b0%bb%ea%b8%b8/1-%ed%95%9c%ea%b5%ad%ec%9d%84-%ec%9e%87it%eb%8a%94-%ea%b8%b0%ec%b0%bb%ea%b8%b8-%ec%a0%9c%ec%9e%91-%ed%94%84%eb%a1%9c%ec%a0%9d%ed%8a%b8-%eb%aa%a8%ec%a7%91-%ec%95%88%eb%82%b4%eb%ac%b8/