{"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":116,"pdf_page":132,"physical_index":132,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"0fbf8ec9d807c35cd5dcb4f8e490bb28edd84c8e3741a5e967e0bf98f2065cbc"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"连接继电器是建立逻辑门的关键。\n\n实际上，灯泡可以采用两种方式连接到继电器上。注意，弹性金属簧片是被电磁铁拉下来的。平时，金属簧片与上端触点相接触，当电磁铁拉动它时，它就会与下端触点相接触。我们之前一直把金属簧片与下方触点接触作为继电器的输出，而其实也可以把它与上方触点相接触作为输出。当我们这样使用的时候，继电器的输出恰好相反，当输入开关断开的时候，灯泡发光。\n\n当输入开关闭合时，灯泡熄灭。\n\n用开关术语来说，这种继电器叫做双掷继电器。它拥有两个输出，但是这两个输出在电的极性上是对立的一当一端有电压时，另一端就没有。\n\n编码—隐匿在计算机软硬件背后的语言\n\n116","previous_page":115,"next_page":117}