{"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":127,"pdf_page":143,"physical_index":143,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"76e66d6c96c437a67a605bd5a19878f1dab3493407ef4cfde4c5a1085143c486"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"器，等等。\n\n简化过的选择猫咪的表达式为：\n\n$$\n( \\mathbf { N } \\times ( ( \\mathbf { M } \\times ( \\mathbf { W } + \\mathbf { T } ) ) + ( \\mathbf { F } \\times ( 1 - \\mathbf { W } ) ) ) ) + \\mathbf { B }\n$$\n\n在这个表达式中，每个加号(+)，必定对应电路中的一个或门。对于每一个乘号(×)，则对应一个与门，电路图如下所示。\n\n电路图左侧的字母由上到下的顺序与它们表达式中出现的顺序一样。这些信号来源于与反向器相连的开关和2-4译码器的输出。请注意用来表示表达式中（1-W）部分的反向器的用法。\n\n这时，你可能会说：“这一堆继电器太多了！”，是的，确实如此。每个与门和或门中有两个继电器，一个反向器中有一个继电器。但是我在这里要说的就是你必须习惯它。之后的章节中我们还会用到更多的继电器。还好你不用真的买来并在家中自己连接它们。\n\n下面要介绍另外两种本章要用到的逻辑门。这两个门都会用到这样一个继电器，该继电器在未被触发时，其输出为高电平（这是用在反向器中的输出）。例如，在下面这种配置中，第一个继电器的输出为第二个继电器提供电源。当两个继电器全都断开时，灯泡发光。\n\n127","previous_page":126,"next_page":128}