{"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":208,"pdf_page":224,"physical_index":224,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"55932aae607e36a3b50641967f02222969c5da9ee08804722d6c69d277c66be9"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"“选择”端之所以连接到译码器和选择器，主要作用是在两个8×1RAM阵列中选择一个，本质上它扮演了第4根地址线的角色。因此这种结构实质上是一种16×1的RAM阵列，如下图所示。\n\n上图所示的RAM阵列存储容量为16个单位，每个单位占1位。\n\nRAM阵列的存储容量与其地址输入端的数量有直接的联系。在没有地址输入端的情况下（只有1位锁存器和8位锁存器的情况），只能存储1个单位的数据；当存在1个地址输入端时，可以存储2个单位的数据；有两个地址输入端时，可以存储4个单位的数据；有3个地址输入端时，可以存储8个单位的数据；有4个地址输入端时，可以存储16个单位的数据。我们可以把它们之间的关系归纳成如下等式：\n\n编码隐匿在计算机软硬件背后的语言\n\n208","previous_page":207,"next_page":209}