数字存储示波器系统

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本数字存储示波器系统。有两种工作状态:实时采集、存储输入。实时采集方式适用于输入信号频率较低(<100Hz)的情况。工作在该方式时,输入信号经过AD转换,对应的数字量传入单片机,然后立即通过串行线传输到计算机中。存储输入方式则是用于输入频率信号较高(100Hz~50kHz)的情况。工作在该方式时,采用DMA(直接存储器访问)技术,输入信号经过AD转换,对应数字量直接写入RAM中。转换完毕后,再通过串行线将RAM中的数据传输到计算机中。采集过程与传输过程可以分别进行,采集过程不需要计算机参与,只要不掉电,波形数据可以存储任意长时间。
数字示波器的制作.rar
  • 0061、数字示波器的制作
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