This pscad tutorial material guide you to study pscad through basic example. you will have a chance to familiar with pscad very good for beginner want to study PSCAD.

Keil C 52系列单片机串口通信程序-Communicate Programs

采用串口通信，当检测到有数据通过串口输入时候，LED会亮出所发送的数据的一个小程序-Using serial communication, when it is detected via the serial data input time, LED will be flashed a small program that sends data