{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"38270854-596f-4a26-8183-db8c968c6020","title":"编码 隐匿在计算机软硬件背后的语言","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787121181184","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"38270854-596f-4a26-8183-db8c968c6020","id":"38270854-596f-4a26-8183-db8c968c6020","uuid":"38270854-596f-4a26-8183-db8c968c6020","title":"编码 隐匿在计算机软硬件背后的语言","normalized_title":"编码隐匿在计算机软硬件背后的语言","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787121181184","isbns":["9787121181184","0123456789","6044921875","3039331000","0000000000","0000000000000"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":438,"navigation_url":"https://workshop.closeclaw.top/ai/book/38270854-596f-4a26-8183-db8c968c6020","title_url":"https://workshop.closeclaw.top/ai/title/%E7%BC%96%E7%A0%81%20%E9%9A%90%E5%8C%BF%E5%9C%A8%E8%AE%A1%E7%AE%97%E6%9C%BA%E8%BD%AF%E7%A1%AC%E4%BB%B6%E8%83%8C%E5%90%8E%E7%9A%84%E8%AF%AD%E8%A8%80","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/38270854-596f-4a26-8183-db8c968c6020/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/38270854-596f-4a26-8183-db8c968c6020/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/38270854-596f-4a26-8183-db8c968c6020","page_url":"https://workshop.closeclaw.top/api/ai/books/38270854-596f-4a26-8183-db8c968c6020/page","search_url":"https://workshop.closeclaw.top/api/ai/books/38270854-596f-4a26-8183-db8c968c6020/search"},"page":{"printed_page":115,"pdf_page":131,"physical_index":131,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"eb2f1d7da45a91299df1fb698fbbe4973b85c651371e09c4afc0c5fe5634edfc"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"但是，这个电路图中没有清楚地表明，为什么我们要使用继电器。可以先不看回路，单单看继电器，像前面的控制面板一样，从输出和输入开始。\n\n当电流流经输入时（例如，用一个开关把输入连到“V”端)，电磁铁就会被触发，输出就得到一个电压。\n\n继电器的输入不一定只能是开关，其输出也未必只限于灯泡。一个继电器的输出可以连到另一个继电器的输入，例如下面这个电路：\n\n当开关闭合，第一个继电器被触发，提供电压给第二个继电器。于是第二个继电器被触发，使灯泡发光。\n\n11门\n\n115","previous_page":114,"next_page":116}