ASCII（American Standard Code for Information Interchange，美国信息互换标准代码）是一套基于拉丁字母的字符编码，共收录了 128 个字符，用一个字节就可以存储，它等同于国际标准 ISO/IEC 646。 ASCII 编码于 1967 年第一次发布，最后一次更新是在 1986 年，迄今为止共收录了 128 个字符，包含了基本的拉丁字母（英文字母）、阿拉伯数字（也就是 1234567890）、标点符号（,.!等）、特殊符号（@#$%^&等）以及一些具有控制功能的字符（往往不会显示出来）。 …

In the 7-bit ASCII character set, ASCII code 21 is represented by the control character ␕, also known as the negative acknowledge.

2018年8月29日 · ASCII(American Standard Code for Information Interchange，美国信息互换标准代码)是一套基于拉丁字母的字符编码，共收录了 128 个字符，用一个字节就可以存储，它等同于国际标准 ISO/IEC 646。

ASCII（发音：，American Standard Code for Information Interchange，美国信息交换标准代码）是基于拉丁字母的一套电脑编码系统。 它主要用于显示现代英语，而其扩展版本延伸美国标准信息交换码则可以部分支持其他西欧语言，并等同于国际标准ISO/IEC 646。

A complete list of all ASCII codes, characters, symbols and signs included in the 7-bit ASCII table and the extended ASCII table according to the Windows-1252 character set, which is a superset of ISO 8859-1 in terms of printable characters.

ASCII (American Standard Code for Information Interchange) is a 7-bit characters code, with values from 0 to 127. The ASCII code is a subset of UTF-8 code. The ASCII code includes control characters and printable characters: digits, uppercase letters and lowercase letters.

ASCII is a character encoding standard used to store characters and basic punctuation as numeric values. ASCII codes from 0 - 127 are identical to Unicode. Adding 32 (or flipping the sixth bit) will convert an upper case letter to lower case.

The following is a complete ASCII table. You can look up ASCII number for a character. Also look up a character for ASCII number. ASCII currently defines codes for 128 characters: 33 are non-printing characters, and 95 are printable characters.

ASCII 对照表. ASCII码（美国信息交换标准代码，American Standard Code for Information Interchange）是一种字符编码标准，用于表示英文字符、数字、标点符号及控制字符等内容。它为计算机和通信设备提供了一种通用的方式来表示文本数据。

ASCII character #21. Char NAK - Negative Acknowledge. Negative acknowledge is sent by a station in the role of negative answer to the station with which the connection was established. …