{"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":124,"pdf_page":140,"physical_index":140,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"6d359a59573c31862bbeb612a911fa5ae942bb49fef07af075269a7171662082"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"当开关闭合时，灯泡发光。\n\n也可以用另外一种连接方式，使开关断开时灯泡被点亮。\n\n这样的话，开关闭合，灯泡就会熄灭。以这种方式连接的继电器叫做反向器(inverter)。反向器不是逻辑门(一个逻辑门通常有两个或多个输入)，尽管如此，它的用处还是很广。反向器可以用如下的专门符号来表示。\n\n$$\n1 0 0 - 1 0 0 - 1 0 0\n$$\n\n由于它能将0（低电平）转换为1（高电平)，因此被称为反向器，反过来也是一样的。\n\n$$\n\\sum \\limits _ { 1 \\leq i = 1 } ^ { \\infty } \\sum \\limits _ { n = 1 } ^ { \\infty } i\n$$\n\n利用反向器、与门和或门，我们就可以着手去设计一个自动选择理想猫咪的控制面板了。首先从开关开始，第一个开关闭合表示母猫，断开表示公猫。因此，我们可以得到两个信号，把它们分别叫做F和M，如下图所示。\n\n当F为1时，M为0，反之亦然。同样，第二个开关闭合表示这只猫已绝育，断开则\n\n编码隐匿在计算机软硬件背后的语言\n\n124","previous_page":123,"next_page":125}