One in the so called hundreds columns, a two in the so called tens column 2 so that's 10 times 1 plus 10 times 2 is 120, 123 plus 3 times 1, 123 alright, so completely uninteresting, if this is something long familiar to you, but it turns out computers work in exactly the same way.

这里的1处于百位，2处于十位,所以100乘以1加上10乘以，再加上1乘以3，好的，完全正确就是，但是毫无趣味，这对你是一件极其熟悉的事，但是电脑结果也是以同样的方式运行的。

哈佛公开课 - 计算机科学课程节选