But at the end of the day, and here's why we just went with binary and not decimal years ago, when you have one implement a computer with a physical device, it's actually really easy to represent the notion of on or off.

但是最终，之前我们采用二进制,而不是十进制，主要是因为当我们用一台实体机器运行计算机时，这实际上很容易用开或者关的概念来表示。

哈佛公开课 - 计算机科学课程节选

So what would be the letter A in binary inside of a computer's memory when you hit the letter A on the keyboard, for capital A?

当你敲击键盘上的字母A时,那么在计算机二进制的存储中,字母A是什么样的呢？

哈佛公开课 - 计算机科学课程节选