主板采用数字式控制芯片，功能强大操作简单。
The mother board USES digital control chip which owns powerful functions and easily operation.
介绍了由TMS320 LF 2407a和AT 89 C 52单片机为静态开关主辅控制芯片的双cpu数字式智能控制方案。
In this paper the digital intelligent control scheme for a static switch based on double CPUs consisting of TMS320LF2407A and AT89C52 is described.
首先简要介绍DDS的工作原理及其性能，然后阐述如何利用AD985 1芯片设计一个高精度直接数字式合成频率源。
This paper briefly introduces the basic principles and the performance of DDS. Then it mainly describes how to use AD9851 chip to design a direct digital synthesis frequency source with high accuracy.
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