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。 ISO/IEC 9995-1:2009确定了键盘的各个部分，并规定了这些部分的一般形状和相对位置。 包括键间距和物理特征，以及控制键上字符和符号放置的原则。ISO/IEC 9995-1:2009规定了适用于信息技术设备的所有类型的数字、字母数字和复合键盘的按键编号系统。

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. ISO/IEC 9995-1:2009 identifies the sections of the keyboard and specifies the general shape and relative placement of the sections. Spacing of keys and physical characteristics are covered, as are the principles governing the placement of characters and symbols on keys. ISO/IEC 9995-1:2009 specifies a key numbering system which applies to all types of numeric, alphanumeric and composite keyboards of information technology equipment.