ISO 9241-420:2011根据人机工程学因素，考虑用户的限制和能力以及特定任务和使用环境，为交互式系统输入设备的选择提供了指南。它描述了为手头的任务选择设备或设备组合的方法。它还可用于评估现有条件下权衡的可接受性。 ISO 9241-420:2011的目标用户是用户组织和系统集成商，他们根据给定的使用环境定制系统。 它适用于以下输入设备:键盘、鼠标、圆盘、操纵杆、轨迹球、轨迹板、平板电脑和覆盖物、触摸屏、Style和光笔。它没有规定这些设备的设计要求或建议。

ISO 9241-420:2011 provides guidance for the selection of input devices for interactive systems, based on ergonomic factors, considering the limitations and capabilities of users and the specific tasks and context of use. It describes methods for selecting a device or a combination of devices for the task at hand. It can also be used for evaluating the acceptability of trade-offs under the existing conditions. The target users of ISO 9241-420:2011 are user organizations and systems integrators who tailor systems for a given context of use. It is applicable to the following input devices: keyboards, mice, pucks, joysticks, trackballs, trackpads, tablets and overlays, touch-sensitive screens, styli and light pens. It does not specify design requirements or give recommendations for those devices.