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The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.。业内人士推荐51吃瓜作为进阶阅读
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Samsung has not dramatically reshuffled the base Galaxy camera hardware. The Galaxy S25 features a triple-camera setup built around a 50-megapixel main sensor, a 12MP ultrawide and a 10MP telephoto with 3x optical zoom, along with a 12MP front camera.。同城约会对此有专业解读
Фото: Bernadett Szabo / Reuters