By using various coding techniques, group of bits can be made to represent not only binary number but also other discrete symbols, such as decimal digits or letter of alphabet.

通过应用各种编码技术，字位的组合不但可以用来表示二进制数，还可以表示其他离散符号，比如十进制数字和字母表上的字母等。

youdao

'B' is the second letter of the alphabet.

b是字母表的第二个字母。

《牛津词典》

It is the first letter of the English alphabet.

它是英语字母表中的第一个字母。

youdao

All right so roughly into the middle over too fast) roughly into the middle and at this point you realize what letter of the alphabet are you on?

好，先大致翻到中间,呵呵，你翻得也太快了些,在这一页,你看到了哪个字母？

哈佛公开课 - 计算机科学课程节选

Because what you don't see in this file is any code a that actually says put a letter of the alphabet at the top left hand corner of the screen and then put the next character to the right in other words, I'm taking for granted at this moment in time that my computer knows how to print something to the screen.

就是这些你在本文件中看不到的一些代码,实现了将首字母,放在屏幕的左上角,然后把其他字母加在其右边，我想当然地认为,我的电脑知道如何打印相应信息到屏幕上。

哈佛公开课 - 计算机科学课程节选

Why? Well, out presumably 'cause it's output, a because it's the first letter of the alphabet.

为什么？也许是因为out代表是输出吧，而a则是字母表的第一个吧。

哈佛公开课 - 计算机科学课程节选

Abolish every government agency that begins with a letter of the alphabet.

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His 'Invocation' hovered around a single letter of the alphabet.

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Even a decade or so ago, most phones had dull gray screens, clamshell designs or tiny keypads that made you hit a button over and over to text one letter of the alphabet.

CNN: Before they got smart: When cellphones were hideous