请注意，准确地说，这个图不是纯粹的UML，因为UML常常被用来模拟一个系统，而样本应用程序实际上由三个系统组成。

Note that this figure may not exactly be pure UML, as UML is usually used to model a single system, whereas the sample application is really composed of three systems.

youdao

图5演示了由一组后台服务和模拟器共同支持的系统的逻辑视图。

Figure 5 illustrates a logical view of a system supported by a combination of live back-end services and simulators.

youdao

如果不需要非易失性门，考虑使用器件共用在模拟和混合信号系统中：数字电位器(图1)。

If you need only a few nonvolatile gates, consider using a component common in analog - and mixed-signal systems: the digital potentiometer (Figure 1).

youdao