blocks|key|1604138|text|“非ASCII字符”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1604139|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

blocks|key|198085|text|未定义127以上的ASCII字符代码。许多不同的设备和软件供应商为值128-255开发了自己的字符集。有的选择了图符，有的选择了重音字符，有的选择了其他字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|198086|Unicode试图创建一组通用的字符代码，其中包括大多数语言中使用的字符。这不仅包括传统的西方字母表，还包括西里尔语、阿拉伯语、希腊语，甚至包括来自汉语、日语和韩语的大量字符，以及许多其他现代和古代语言。|198087|Unicode有几种实现。如果使用UTF-8，则是最流行的格式之一。流行的一个主要原因是它向后兼容ASCII，字符代码0到127对于ASCII和UTF-8都是相同的。|198088|这意味着更好地说ASCII是UTF-8的一个子集。字符代码128及以上不是ASCII。它们可以是UTF-8+(或其他Unicode)，也可以是硬件或软件供应商的自定义实现。|198089|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

ASCII character codes above 127 are not defined. many differ equipment and software suppliers developed their own character set for the value 128-255. Some chose drawing symbols, sone choose accent characters, other choose other characters.

Unicode is an attempt to make a universal set of character codes which includes the characters used in most languages. This includes not only the traditional western alphabets, but Cyrillic, Arabic, Greek, and even a large set of characters from Chinese, Japanese and Korean, as well as many other language both modern and ancient. 

There are several implementations of Unicode. One of the most popular if UTF-8. A major reason for that popularity is that it is backwards compatible with ASCII, character codes 0 to 127 are the same for both ASCII and UTF-8. 

That means it is better to say that ASCII is a subset of UTF-8. Characters code 128 and above are not ASCII. They can be UTF-8 (or other Unicode) or they can be a custom implementation by a hardware or software supplier.

blocks|key|1664503|text|你可以创造一个像“trans”，“supra-ASCII”，“ultra-ASCII”等术语。实际上，“meta+-ASCII”会更好，因为它暗示了meta比特。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1664504|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You could coin a term like “trans-ASCII,” “supra-ASCII,” “ultra-ASCII” etc. Actually, “meta-ASCII” would be even nicer since it alludes to the meta bit.

blocks|key|364982|text|“扩展ASCII”是我使用的术语，意思是“超出原始0-127的字符”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|364983|Unicode是一组可能的扩展ASCII字符，而且非常非常大。|364984|UTF-8是表示Unicode字符的方式，它向后兼容原始的ASCII。|364985|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

"Extended ASCII" is the term I'd use, meaning "characters beyond the original 0-127". 

Unicode is one possible set of Extended ASCII characters, and is quite, quite large.

UTF-8 is the way to represent Unicode characters that is backwards-compatible with the original ASCII.

blocks|key|198198|text|不表示ASCII字符的位序列不一定是Unicode字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|198199|根据您使用的字符编码，它可以是：|198200|198201|an+invalid+bit+sequence|unordered-list-item|198202|a+Unicode+character|198203|an+ISO-8859-x+character|198204|a+Microsoft+1252+character+|198205|一个其他字符编码中的字符|198206|错误，二进制数据等|198207|198208|适用于所有这些情况的一个定义是：|198209|198210|Not+a+ASCII+character|198211|+(ASCII字符不是ASCII码字符)|198212|为了更加学究，即使是“非ASCII字符”也不能精确地适应所有这些情况，因为有时超出这个范围的位序列可能只是一个无效的位序列，而根本不是一个字符。|198213|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|14|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|16|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|17|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|18|8|@]|9|@]|A|$]]|$1|L|3|M|5|G|7|19|8|@]|9|@]|A|$]]|$1|N|3|O|5|G|7|1A|8|@]|9|@]|A|$]]|$1|P|3|Q|5|G|7|1B|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1D|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|V|3|W|5|G|7|1F|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1H|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|12|$]]

A bit sequence that doesn't represent an ASCII character is not definitively a Unicode character.

Depending on the character encoding you're using, it could be either:

<ul>
<li>an invalid bit sequence</li>
<li>a Unicode character</li>
<li>an ISO-8859-x character</li>
<li>a Microsoft 1252 character</li>
<li>a character in some other character encoding</li>
<li>a bug, binary data, etc</li>
</ul>

The one definition that would fit all of these situations is:

<ul>
<li>Not an ASCII character</li>
</ul>

To be highly pedantic, even "a non-ASCII character" wouldn't precisely fit all of these situations, because sometimes a bit sequence outside this range may be simply an invalid bit sequence, and not a character at all.

blocks|key|1664632|text|我从一个在线资源(Cool+website+though)中摘录了一些文字，因为我发现它很有用，并且适合写作和回答。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1664633|最初只包括大写字母和数字，但在1967年增加了小写字母和一些控制字符，形成了众所周知的US-ASCII，即字符0到127。因此，这组只有128个字符的书在1967年作为标准出版，包含了你需要用英语写的所有东西。|1664634|1981年，IBM开发了一个8位ASCII码的扩展，称为“代码页437"，在这个版本中，用图形字符代替了一些过时的控制字符。此外，还增加了128个字符，添加了新的符号、符号、图形和拉丁字母，所有标点符号和字符都需要用其他语言书写文本，​，如西班牙语。以这种方式添加了从128到255的ASCII字符。|1664635|IBM在其被称为"IBM-PC“的5150型号的硬件中包含了对此代码页的支持，该型号被认为是第一台个人计算机。这种型号的操作系统"MS-DOS“也使用了这种扩展的ASCII码。|1664636|entityMap|0|LINK|mutability|MUTABLE|url|http://www.theasciicode.com.ar/ascii-control-characters/unit-separator-ascii-code-31.html^0|9|J|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]]]

Taken words from an online resource (<a href="http://www.theasciicode.com.ar/ascii-control-characters/unit-separator-ascii-code-31.html" rel="nofollow noreferrer">Cool website though</a>) because I found it useful and appropriate to write and answer.

At first only included capital letters and numbers , but in 1967 was added the lowercase letters and some control characters, forming what is known as US-ASCII, ie the characters 0 through 127.
So with this set of only 128 characters was published in 1967 as standard, containing all you need to write in English language.

In 1981, IBM developed an extension of 8-bit ASCII code, called "code page 437", in this version were replaced some obsolete control characters for graphic characters. Also 128 characters were added , with new symbols, signs, graphics and latin letters, all punctuation signs and characters needed to write texts in other languages, ​such as Spanish.
In this way was added the ASCII characters ranging from 128 to 255.

IBM includes support for this code page in the hardware of its model 5150, known as "IBM-PC", considered the first personal computer.
The operating system of this model, the "MS-DOS" also used this extended ASCII code.

blocks|key|364956|text|非ASCII+Unicode字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|364957|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

blocks|key|365214|text|如果您说"High+ASCII"，根据定义，您是在128-255十进制范围内。ASCII本身被定义为一个字节(实际上是7位)的字符表示；使用高位来允许非英语字符发生在后面，并产生了定义由特定值表示的特定字符的代码页。任何多字节(>+255个十进制值)都不是ASCII。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|365215|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you say "High ASCII", you are by definition in the range 128-255 decimal. ASCII itself is defined as a one-byte (actually 7-bit) character representation; the use of the high bit to allow for non-English characters happened later and gave rise to the Code Pages that defined particular characters represented by particular values. Any multibyte (> 255 decimal value) is not ASCII.

What is the technically correct way of referring to "high ascii" or "extended ascii" characters? I don't just mean the range of 128-255, but any character beyond the 0-127 scope. 

Often they're called diacritics, accented letters, sometimes casually referred to as "national" or non-English characters, but these names are either imprecise or they cover only a subset of the possible characters. 

What correct, precise term that will programmers immediately recognize? And what would be the best English term to use when speaking to a non-technical audience?

What's the proper technical term for "high ascii" characters?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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什么是指“高ascii”或“扩展ascii”字符的技术正确方式？我指的不仅仅是128-255的范围，而是超出0-127范围的任何字符。它们通常被称为变音符号，重音字母，有时被随意地称为“国家”或非英语字符，但这些名称要么不精确，要么只覆盖了可能字符的子集。什么是正确的，准确的术语，程序员会立即识别？当对非技术听众讲话时，最好的英语术语是什么？

问“高ascii”字符的恰当术语是什么？
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