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  • bitdays.co.kr/2022/01/15/%ea%b8%80%eb%a1%9c%eb%b2%8c-pcb-%eb%b3%b4%eb%93%9c-%ec%8b%9c%ec%9e%a5-%eb%b6%84%ec%84%9d%ed%95%a8%ec%9c%bc%eb%a1%9c%ec%8d%a8-%ed%81%ac%ea%b8%b0-%ec%84%b8%ea%b7%b8%eb%a8%bc%ed%8a%b8-%ec%9d%91/ (port 80)