{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"ae053936-f6b1-488b-8973-bb2332d1be14","title":"数字技术研究","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787308182003","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"ae053936-f6b1-488b-8973-bb2332d1be14","id":"ae053936-f6b1-488b-8973-bb2332d1be14","uuid":"ae053936-f6b1-488b-8973-bb2332d1be14","title":"数字技术研究","normalized_title":"数字技术研究","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787308182003","isbns":["9787308182003"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":790,"navigation_url":"https://workshop.closeclaw.top/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14","title_url":"https://workshop.closeclaw.top/ai/title/%E6%95%B0%E5%AD%97%E6%8A%80%E6%9C%AF%E7%A0%94%E7%A9%B6","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/ae053936-f6b1-488b-8973-bb2332d1be14/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/ae053936-f6b1-488b-8973-bb2332d1be14","page_url":"https://workshop.closeclaw.top/api/ai/books/ae053936-f6b1-488b-8973-bb2332d1be14/page","search_url":"https://workshop.closeclaw.top/api/ai/books/ae053936-f6b1-488b-8973-bb2332d1be14/search"},"page":{"printed_page":"12 / 7","pdf_page":31,"physical_index":31,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"cfb731cabf05b237f9390232ccc94cafc1158458059e616e97e56ff6a927fbe7"},"chapter":"第1章 历史背景","content":"数字电子计算\n\n审视通信与计算的融合之前，我们不妨先回到电子计算出现的20世纪三四十年代。当时，数据处理与通信设备被集成在一起，发挥出最大效率，形成了一个新的数字电子范式。我们推断，这是因为出现了高速处理信息的更高需求。这种需求可通过修改20世纪初的另一项发明来得以实现，即为广播和电话而发明的“真空管”。虽然用真空管来代替机械部件引发了许多新的问题，不过，通过“电子”可使计算速度接近光速。20世纪30年代中期，几个地区同时出现了一些解决方案，二战期间出现的速度甚至更快，尽管当时都是偷偷摸摸进行的，甚至有时是在没有资金、缺少人力的情况下实现的。\n\n第1章 历史背景\n\n12\n\n7","previous_page":30,"next_page":32}