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.
第一百三十六条 违反治安管理的记录应当予以封存，不得向任何单位和个人提供或者公开，但有关国家机关为办案需要或者有关单位根据国家规定进行查询的除外。依法进行查询的单位，应当对被封存的违法记录的情况予以保密。
，这一点在搜狗输入法下载中也有详细论述
Photograph: Simon Hill
A developer creates an API key and embeds it in a website for Maps. (At that point, the key is harmless.)