{"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":117,"pdf_page":133,"physical_index":133,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"d39f8218ad8143c603b93ba95cc322b84cf8f355915fb62f22dcadf19a1bd1ce"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"另外，如果想象不出现代继电器是什么样子，你可以在你们当地电器行的简易透明包装中看到一些。有些继电器就像方形小冰块一样大，如零件型号为275-260和275-214的继电器就是这种大小的继电器，而且它们也十分耐用。这些继电器内部的元件被封在一个干净的塑料外壳里，因此你可以看到电磁铁和金属簧片。本章和下一章所描述的电路都使用的是元件号为275-240的继电器，这种继电器体积小（大约一块口香糖大小）而且价格便宜（每个2.99美分）。\n\n前面提到，两个开关可以串联，同样地，两个继电器也可以串联。\n\n上面继电器的输出为下面继电器提供电压。如上图所示，当两个开关都断开的时候，灯泡不发光。我们先闭合上面的开关。\n\n11门\n\n117","previous_page":116,"next_page":118}