系统测试的重点是测试数据转换成从旧体制向新的，它通常并不涉及调试电脑程式，或测试资料处理程序。

System testing focuses on testing the data converted from the old system to the new; it normally does not involve debugging computer programs, or testing the information processing procedures.

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该方法之关键在于直接从时序电路的状态转换图（STD）获得J-K、D和T触发器的激励方程式。

The crux of this method is that excitation equations for J K, D and T flip flops are obtained directly from the state transition diagrams(STDs).

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该方法之关键在于直接从时序电路的状态转换图（STD）获得J-K、D和T触发器的激励方程式。

The crux of this method is that excitation equations for J K, D and T flip flops are obtained directly from the state transition diagrams(STDs).

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