The usual Web-oriented definitions call for easy-to-use sites that have clearscreen layouts and workflow logic, don't require specialized training, and so on.
对于网站来说，“容易使用”意味着具有清晰的屏幕布局和工作流逻辑，不需要特殊培训，等等。
2
C51 program has been set the schedule of reading and writing status for controller. It can work out some operations of writing instruction code, writing data code, clearscreen and roll screen.
It can guide you from point to point in most major cities with precise turn-by-turn directions—spoken by a clear human-sounding voice, and written on a screen in front of the driver.