{"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":20,"pdf_page":36,"physical_index":36,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"23515ea36be9c9941679b3681720e5186e367935eaa988c3e9706ac65a307766"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"综上所述，我们将6位二进制码（其实是6个点）所能表示的全部64种可能的编码都罗列了一遍。而且这64组编码中有很大一部分，根据上下文的不同将有着双重身份。尤其值得注意的是数字标识符和取消“数字标识状态”的字母标识符。它们改变了后面编码的意义从表示字母到表示数字，又从表示数字回到表示字母。像这样的编码通常被称作“优先码”（precedence codes）或者“换档码”（shift codes)。它们改变着作用域内编码的含义，直到作用域结束。\n\n大写字母标识符表示紧随它的字母（而且仅仅是紧随它的字母）应该被译为大写。类似这样的编码被称为“逃逸码”(escape codes)。逃逸码让你“逃离”对编码串单调的、一成不变的解析，而转入一种新的解析方式中。在以后的章节中我们将看到，在使用二进制码对书面语言进行编码时，换档码和逃逸码是相当常见的。\n\n编码隐匿在计算机软硬件背后的语言\n\n20","previous_page":19,"next_page":null}