范围1。1本标准由主要和补充图形和控制集、基于上述集的7位和8位代码以及代码扩展规则组成。字符集用于数据处理、编程和信息交换中的一般用途。这些字符集包括字母、数字、标点符号和其他符号和控件，以及它们的编码表示。1.2在确定这些字符集时，考虑了各种应用中对图形字符和控制功能的要求，以及计算机和辅助设备特性施加的限制。具体考虑因素包括:（a）需要一套足以支持使用英语和法语进行信息交换的图形字符；（b） 需要足够数量的设备控件和格式效应器；（c） 需要提供与北美和国际现有系统兼容的交换； （d） 媒体和设施的物理限制；（e） 数据操作和交互式计算要求；（f） 编程要求；（g） 键盘惯例和限制。1.3本标准中描述的主要和补充字符集主要用于数据处理系统和相关设备之间的信息交换。它们可以被视为抽象意义上的基本字母表。可通过应用本文定义的代码扩展技术，并通过使用ISO国际编码字符集登记册中包含的编码字符集来扩展应用范围，该登记册包含与转义序列一起使用的编码字符集，可从ISO 2375的登记机关获得，欧洲计算机制造商协会，地址:日内瓦CH-1204罗纳路114号，瑞士

Scope1.1This Standard consists of primary and supplementary graphic and control sets, 7-bit and 8-bit codes based on the above sets, and rules for code extension. The character sets are intended for general usage in data processing, programming, and information interchange. These character sets include letters, figures, punctuation marks, and other symbols and controls, with their coded representation.1.2The requirements for graphic characters and control functions in various applications and the limitations imposed by computer and ancillary equipment characteristics have been taken into account in determining these character sets.Specific considerations included the following:(a) the need for a set of graphic characters sufficient to support information interchange using both the English and the French languages;(b) the need for an adequate number of device controls and format effectors;(c) the need to provide for compatible interchange with existing systems in North America and internationally;(d) physical limitations of media and facilities;(e) data manipulation and interactive computing requirements;(f) programming requirements;(g) keyboard conventions and limitations.1.3The primary and supplementary character sets described in this Standard are primarily intended for the interchange of information among data processing systems and associated equipment. They may be regarded as basic alphabets in an abstract sense. The range of applications may be extended through the application of the code extension techniques defined herein and through the use of the coded character sets included in the ISO International Register of Coded Character Sets to be Used with Escape Sequences, available from Registration Authority for ISO 2375, European Computer Manufacturers Association, 114, Rue du Rhone, CH-1204 Geneva, Switzerland.