计算机发展的早期阶段，"操作系统"的概念还未诞生。那么它到底是怎么产生又是怎么发展的呢？
<iframe src="//player.bilibili.com/player.html?isOutside=true&aid=278970831&bvid=BV1Zc411D7sG&cid=25895834391&p=1" scrolling="no" style="width: 900px; height: 680px;border="0" frameborder="no" framespacing="0" allowfullscreen="true"></iframe>
页:
[1]