When we get to the spell checking, the dictionary assignment, when you're actually manipulating text files, maybe writing some output, these lower level details that actually empower you to solve problems properly.

当你检查拼写时，字典查询，当你熟练运用这些文本文件时，可能是写一些输出文本，这些小细节,恐怕可以帮助你合理解决问题。

哈佛公开课 - 计算机科学课程节选

human text, ASCII text as input and output zeroes and ones that represent that program in a manner that the CPU, interesting, dammit, not installed on this computer.

编译器以人输入的文本，ASCII码为输入,它输出一些cpu实际上可以理解的，在这台计算机上没有安装。

哈佛公开课 - 计算机科学课程节选