Наука и техника
「我一開始不願意付錢，但發現那樣就找不到工作，只能付錢趕快上工。」他說。
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She says popular topics gaining traction include parenting, reality TV and skincare.
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.