{"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":223,"pdf_page":239,"physical_index":239,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"0b12e87610751bb2959a42b819affcc5bf993910f9949407ab80d11f69b61bc0"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"我们已经清楚地认识到新的自动加法器能够把数据求和的结果写入到第一个RAM阵列（标记为“数据”），而新的RAM阵列（标记为“代码”）则只能通过控制面板写入。\n\n我们需要四个代码来标记新的自动加法器需要做的四个操作，这些代码可以任意指定。如下所示的是一种方案。\n\n为了使上面讨论的三组加法得以正常执行，你需要通过控制面板把如下值存入代码RAM阵列。\n\n比较一下该RAM阵列与存放累加数据的RAM阵列中的内容，你会发现，代码RAM阵列中存放的每一个代码都对应着数据RAM中要被加载或者加到累加器中的数，或者对应需要存回到数据 RAM中的某个数。以这种方式使用的数字代码常常被称为指令码(instruction code）或操作码（operation code，opcode)。它们指示电路要执行的某种操作。\n\n17 自动操作\n\n223","previous_page":222,"next_page":224}