The controller handles all UI events, such as button clicks, menu selection, and text-field changes.

控制器处理所有UI事件，例如单击按钮、选择菜单以及更改文本字段。

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His sketches at the time showed a credit-card-sized player with a rectangular screen and a central menu button to scroll through a selection of music tracks - very similar to the iPod.

他当时的设计草图表明，这个信用卡大小的播放器带有矩形显示屏和中心控制键，转动这个键可以选择音轨，而这些都与现在的iPod极其相似。

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The system has advantages such as mouse control, push button operation, pop up menu selection, Windows prompt and all Chinese character desktop.

该系统用鼠标控制，按钮式操作，弹出式菜单选择，弹出窗口提示，全中文平台。

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