ISO/IEC 9995定义了一个框架，用于在当今和未来最广泛的使用键盘的应用程序中，所有字母数字和数字键盘的布局。键盘要执行的功能分为三类，分别对应于键盘的主要物理部分。 ISO/IEC 9995在键盘设计中的应用将为用户提供统一、可预测的用户-机器界面，方法是将键盘划分为功能区域和部分，并将功能分配给按键。 lSO/IEC 9995-3:2010定义了一组图形字符在键盘上的分配，当与现有国家版本键盘布局或ISO/IEC 9995-3:2010中定义的补充拉丁组布局结合使用时，允许输入ISO/IEC 10646中规定的集合281（MES-1）定义的最小字符集，并建议扩展该最小字符集。

ISO/IEC 9995 defines a framework for the layout of all alphanumeric and numeric keyboards across the widest spectrum of today's and upcoming applications using keyboards. The functions to be performed by keyboards are grouped into three categories that correspond to the main physical sections of the keyboard. Application of ISO/IEC 9995 in the design of keyboards will provide the user with a unified, predictable user-machine interface by dividing the keyboard into functional areas and sections and allocating functions to keys. lSO/IEC 9995-3:2010 defines the allocation on a keyboard of a set of graphic characters which, when used in combination with an existing national version keyboard layout or the complementary Latin group layout as defined in ISO/IEC 9995-3:2010, allows the input of a minimum character repertoire as defined by collection 281 (MES-1) specified in ISO/IEC 10646 and proposes extensions of this minimum repertoire.