相信很多人都应该通过CTRL+ALT+DEL打开过任务管理器吧，当电脑死机的时候，我们总会是进行类似的操作。
这个按键组合的发明人是原IBM工程师David Bradley，他负责设计和编写代码方面，今天我们来了解下这个按键组合背后的故事吧~
This is the IBM Personal Computer.
It was the most advanced computing machine ever created.
However, this isn't a story about a computer,
but a story about when a computer stops working,
and the man who created a way to start it all over;
the man who invented Control + Alt + Delete.
Let's get into it.
Hi, I'm Dr. Dave Bradley,
but you can call me Dr. Dave.
Back in 1980, I worked on the IBM Personal Computer.
