压缩包里面是本人自己写的日立单片机H8S系列的2638的串口发送演示程序，上电输出hello world。芯片印字HD64F2638F20。开发环境HEW。-Compressed inside is my own written by Hitachi H8S series of 2638 serial port to send demo program, the power output of world hello. Chip printing HD64F2638F20. Developmen