视频介绍
文：芒果冰/Rocky/铁开诚
参考资料：
https://zhuanlan.zhihu.com/p/400343385
https://en.wikipedia.org/wiki/X_Window_System
https://baike.baidu.com/item/%E9%9B%85%E5%85%B8%E5%A8%9C%E9%A1%B9%E7%9B%AE/22657113?fr=ge_ala
https://en.wikipedia.org/wiki/Personal_digital_assista