S3C44B0开发板的电路原理图，protel格式及相关资料说明-S3C44B0 development board circuit schematics, Protel format and related information

S3C44B0开发板电路图，PROTEL版本，在网络找了很久，对初学者很有用处，很经典的一个版本，做硬件的可以参考，特别是做嵌入式的-S3C44B0 development board schematics, PROTEL version, look for a long time in the network, useful for beginners, it is the classic version, so the hardware can refer, in particular, d