EA2440a实验板说明文档\EA2440a技术说明书.pdf .....................\EA2440a新手入门.pdf .....................\Schematic\EA2440a-LCD.pdf .....................\.........\EA2440a-LED.pdf .....................\.........\EA2440a_core_102.pdf .....................\.........\EA2440a_dev-111.pdf .....................\Schematic EA2440a实验板说明文档