采用高速数模转换芯片ADV7120完成了VGA模拟信号的输出；

The VGA analog signal has been generated by using high speed analog to digital chip ADV7120.

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接着，分别介绍了模拟通道部分、数字取样模块、FPGA逻辑控制模块及数模转换模块，包括它们的芯片选择、实现方法和注意事项等。

Then, the thesis discussed the proceeding of the simulating channel part, digitally sampling module, FPGA logically controlled module and AD/DA module, including their chips, realization and notice.

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