具有公共接口的几种数字表头组件设计

Component Design for Several Types of Meter with Common Interface

为虚拟仪器软件设计一组具有通道属性编辑能力,既能够单独显示采样通道的实时值、峰值、谷值、中值和幅值,又能够配对显示峰谷值和中值幅值的多功能组件。该组件内部包含8个独立的控件,这8个控件按照统一的接口设计,调用方式相同,易于使用。

This article demonstrates how to program a meter component used for virtual instrument.The component not only have the ability of editing channel properties but also can display the real time value,peak value,valley value,median value and amplitude value of the channel,especially it can also display both peak value and valley value in a same control.The component contains 8individual controls,and all these controls implement a common interface.So the component＇s customer can use all the controls inside the component with the same mode.