{"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":240,"pdf_page":256,"physical_index":256,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"008ceef9eb4e7170b12e2c7448dfed6fb33d4c2fed3057dc70e15d8be9ec2c1d"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"置位信号的输入。\n\n显然，只有当指令代码为30h并且其后的16位地址被锁存时，我们才必须确保置位信号为1。\n\n毋庸置疑，Jump指令的确很有用。但与之相比，一个在我们想要的情况下跳转的指令更加有用，这种指令称做条件跳转（Conditional Jump)。也许说明该命令重要性的最好方法是这样一个问题：怎样让自动加法器进行两个8位数的乘法运算？例如，我们如何利用自动加法器得到像 A7h与1Ch相乘这种简单运算的结果呢？\n\n这其实很简单。两个8位数相乘得到一个16位数，为了方便起见，把该乘法运算中涉及的3个数均表示为16位数。第一步确定要把乘数和乘积保存到什么位置。\n\n编码——隐匿在计算机软硬件背后的语言\n\n240","previous_page":null,"next_page":241}