摘要: The mind is not a vessel that needs filling , but wood that needs igniting ! 1. 运转CPU 程序计数器pc 将pc置一个初值,然后取值执行,cpu就运转起来了 2. CPU没有好好运转 当遇到IO设备的时候,cpu得等待 阅读全文
posted @ 2020-03-11 21:13 达达i 阅读(440) 评论(0) 推荐(0) 编辑