相反，图应该表示从一个活动传递到另一个活动的任何类型事物：不论它是报表、零部件、已完货物、设计、服务、硬件、软件——或数据。
Instead, the diagram should represent any kind of thing that passes from one activity to another: whether it be orders, parts, finished goods, designs, services, hardware, software — or data.
硬件设计包括原理图、PCB版图设计和硬件安装调试。
The hardware design includes the schematics, PCB layout design and hardware debugging.
文中给出系统硬件、软件设计结构和原理图，改善了原有光电测速精度，提高了系统工作稳定性和可靠性。
This paper presents the hardware, software design and structure diagram of the DSP chip which improves the system stability and reliability.
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