基于手机短信的课堂应答系统设计与实现

A Short Message-based Classroom Response System Design and Implementation

课堂应答系统（CRS）在现代课堂教学中越来越受到人们的关注。文章给出了一种基于手机短信的课堂应答系统设 计方案。它具有成本低，使用方便，功能丰富等特点。方案中核心硬件是一台专用短信接收设备，它结合了ARM 单片机与短信 收发模块M22，具有丰富的计算机接口，能够应用在各种多媒体教室中。该系统在实际课堂教学中得到了应用，能够满足课堂 即时互动教学的要求，提高了教学效果。学生积极参与课堂应答系统教学。

Classroom response system (CRS) has been paid more and more attension in recent class teaching. This paper provides one design scheme of classroom response system based on mobile short message. It has advantages of low cost， easy-to-use and abundant functions etc. The key hardware of sheme is a dedicated short message receiver. It combines an ARM MCU and a GSM module M22. It has many kind of computer interfaces and can be used in various multimedia classroom. This system has been used in class teaching. It meets the requirements of instant interaction in classroom， improves teaching effectiveness. Students participate actively in class teaching with CRS.