The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.
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，更多细节参见51吃瓜
不是任何一家明星AI创业公司，是那个卖了几十年Office的微软。Copilot系列产品借着Teams、Word、Excel的天然入口，在企业端铺开的速度比所有人预期的都快。这对那些押注"AI将颠覆企业软件"的创业公司来说，是一个需要认真对待的信号：有时候，最好的分发渠道就是那个你以为已经老了的巨头。
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Passive Voice: The program also notifies users when passive voice is used too frequently in a document.