{"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":153,"pdf_page":169,"physical_index":169,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"d06ca9782664659802c736aa2683ed506ab231269b18ed5f37ba9ddcffecbbb9"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"你可能还记得，输入 ${ \\bf A } _ { 0 } \\sim { \\bf A } _ { 7 }$ 及 $\\mathbf { B } _ { 0 } \\sim \\mathbf { B } _ { 7 }$ 与两排分别表示两个要相加的8位二进制数的开关相连。进位输入接地。 $\\mathbf { S } _ { 0 } \\sim \\mathbf { S } _ { 7 }$ 与表示结果的8个灯泡相连。由于这个加法有可能得到9位数值，进位输出端也连接了一个灯泡。\n\n控制面板示意如下图所示。\n\n在上图中，开关所表示的是183（即10110111）与22（即00010110）相加，结果如灯泡所示为205（即11001101）。\n\n8位加/减法器所用的新面板较从前做了些许的改动。它增设了一个开关，用以选择做加法还是做减法。\n\n13 如何实现减法\n\n153","previous_page":152,"next_page":154}