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.
[ ] Google Messages - for most of the last 8 months RCS was broken on GrapheneOS, but it's back now and Google messages is still the only option for messaging with family members on iOS.
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车上的传感器各有专长。摄像头是被动感知，像人类的眼睛，看色彩和轮廓很准，但遇到强光或者黑夜容易抓瞎。毫米波雷达和激光雷达属于主动感知，自己发射电磁波去探测。毫米波雷达的波长较长，能够轻易穿透雨、雾和沙尘，测距和测速是一把好手，可惜难以描绘物体的精细边缘。。关于这个话题，同城约会提供了深入分析
Author(s): Yukinari Ikeda, Akio Ishii。体育直播对此有专业解读
The Chinese government's ChatGPT account revealed a global operation to silence dissidents