Segmentation maps a logical address (a 16-bit selector plus a 32-bit offset) to a 32-bit linear address, enforcing privilege and limit checks along the way. Paging then translates that linear address to a physical address, adding a second layer of User/Supervisor and Read/Write protection. The two layers are independent: segmentation is always active in protected mode, while paging is optional (controlled by CR0.PG).
在最新的 macOS 26 系统，已经引入了 Mac 状态栏显示 iPhone 「实时活动」卡片的功能，想必未来也是在为「Mac 上岛」铺路；而「液态玻璃」界面图标留白增加、控制中心滑块变大等调整，均呈现出更友好的触控尺度，也被认为是为触控做铺垫。
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The MacBook is coming back — or at least, that's what the rumors claim. Next week, Apple is expected to announce a colorful, low-cost, non-Air, non-Pro MacBook powered by one of its mobile processors. By avoiding its pricier M-series chips, Apple may reportedly be able to reach a low $699 or $799 price for the MacBook. The $999 MacBook Air is the cheapest laptop on the company's website right now, but Apple also sold the older M1 MacBook Air at Walmart for $700 in 2024, which later went down to $650 last year.，推荐阅读搜狗输入法2026获取更多信息
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