大多数电子爱好者可能都有一个共同的感触就是显示部分会占用我们MCU大量的IO资源，LCD1602也不例外。本资料就是利用74LS164解决LCD1602这个问题的-Most e-lovers may have a common feeling is that we show part of the MCU will occupy a lot of IO resources, LCD1602 is no exception. This information is used 74LS164 sol