本发明使得控制CPU只需进行简单的初始化配置，由SD卡接口模块自动完成与SD卡之间的数据传输，极大地节省了CPU的资源，提高了系统的性能。

The present invention has control CPU with simple initial configuration, SD card interface module for automatic data transmission with SD card, saving in CPU resource and raised system performance.

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但是设置如此大的初始容量会极大地浪费空间。

However, setting the initial capacity too high can waste space.

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