{"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":69,"pdf_page":85,"physical_index":85,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"9d391214fd6000d3d26ec0ad80dc831933f07838e4ec34105f9debeafa9af9a4"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"从另外一种角度来看：当以二进制计数的时候，最右边的一位（最低位）以0和1交替。每当该位由1变为0，从右边数的第二位（次低位）也随之改变—不是由0变到1，就是由1变到 $\\scriptstyle \\mathbf { 0 } _ { \\circ }$ 因此，每次只要有一个二进制数位的值由1变到0，紧挨着的高位数字也会发生变化，而且其变化不是由0到1就是由1到 $\\scriptstyle \\mathbf { 0 } _ { \\circ }$\n\n在书写一个比较大的十进制数的时候，通常在每三位数字之间用一个逗号隔开，这样会让人很清楚地读出数字的大小。例如，当你看到数字12000000时，你可能不得不去数一下其中0的个数才知道这个数是多少，但是，如果数字写做12,000,000，你一眼就会知道它是一千二百万。\n\n二进制数的位长度增加得特别快。例如，一千二百万在二进制中应表示为：101101110001101100000000。为了让二进制数更易读，通常在每四个数字之间用一个连字符来分开，例如，1011-0111-0001-1011-0000-0000，或者每四位空出一个空格：101101110001101100000000。本书的后面，我们将看到更简单的二进制数的表示方法。\n\n通过将数字系统减少至只有0和1两个数字的二进制数字系统，我们已经讨论得足够深入。不可能再找到比二进制数字系统更简单的数字系统了。此外，二进制数字系统还在算术与电子技术之间架起了一座桥梁。在之前的章节中，我们所看到的开关、电线、灯泡，还有继电器等物体，都可以用来表示二进制数0和1。\n\n电线可以表示二进制数字。如果有电流流过这根电线就代表二进制数字1，如果没有，则代表二进制数字0。\n\n8 十的替代品\n\n69","previous_page":68,"next_page":70}