{"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":321,"pdf_page":337,"physical_index":337,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"bf495111e3f10643ff94bd17d1a027c4b6d08f8b20999d78607f1948005aba4c"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"在字节与字符之间建立一种等价关系大大简化了我们的工作，举例来讲，如果要粗略估计一个文本文件所需要的存储空间，只要统计字符数就可以了。这时前面学过的K（kilos）和M（Megas）就派上了用场，用它们来表示文本所占据的计算机存储空间更加通俗易懂。\n\n传统的排版格式是：一张大小为8.5×11英寸的打印纸，采用双倍行距，1英寸的页边距，每页可以容纳约27行的正文。每行宽度约为6.5英寸，每英寸可容纳10个字符，通过计算可以知道每页共包含约1750个字节。如果页面采用单倍行距，那么打印纸的容量约为原先的2倍，即3.5KB。\n\n翻开一本《纽约客》(The NewYorker)杂志，可以看到杂志每页有3栏，每栏包含60行，每行约有40个字符，这样算下来每页大致包含7200个字符（也可以说成字节）。\n\n《纽约时报》(New York Times)每一页包含6栏。假如页面都是文字而不包含标题和图片(这其实是不大可能的)，那么可以认为每栏包含155行，每行大约容纳35个字符，这样算下来整个页面共包含32,550个字符，即32KB。\n\n一般来讲精装书每页大约包含500个单词。根据统计，每个单词平均占用5个字母一一更确切地来讲应该是6个字母，因为单词与单词之间是通过空格来分隔的，所以要一并统计在内。这样算下来，书的每一页大约包含3000个字符。假设每本书平均页数为333，这个估计或许和实际不符，但如果这样估算的话，每本书平均容量为1MB。\n\n不得不承认的是，书与书之间千差万别，所以上面这些也只是估算，下面列举出一些实际数据。\n\n斯科特·菲茨杰拉德（F.Scott Fitzgerald）的《了不起的盖茨比》（The Great Gatsby）大约 300 KB。\n\n塞林格（J.D. Salinger）的《麦田守望者》（Catcher in the Rye)大约 400 KB。\n\n马克·吐温(Mark Twain)的《哈克贝里·弗恩历险记》(The Adventures of Huckleberry\n\n20 ASCII 码和字符转换\n\n321","previous_page":320,"next_page":322}