教学评价系统的前端——测评器开发技术

The technology of developing selector——the frontier of teaching evaluating system

摘要: 本文重点介绍了教学评价系统的前端⁴/⁴/测评器的软硬件开发技术.测评器主要由三部分组成:1、客户端(AT89C51);2、主控端(AT89C52);3、计算机端(VC++编写界面).主控端通过串行总线与所有客户端通信,读入客户端数据存放在主控端的RAM中.主控端与计算机ISA总线相连,将主控端RAM中的数据送到计算机中去,然后由VC++处理数据,最后计算机以文字、图形、声音的形式反映各个客户端的信息.测评器主要应用于中小学课堂、娱乐、投票、选举等方面,实现选择及抢答等功能.

Abstract: This paper discusses the technology of developing selector's hardware software the frontier of teaching evaluating system.The selector is made of clients,master and computer.The master communicates with all clients with serial bus.It reads the data in clients and stores them in its RAM.The master is connected with ISA bus of computer,and sends the data of RAM to computer.Then computer transacts data by VC++.Finally,the information is imaged by words、graphics and sound.The selector is mostly applied in high school classes,entertainment,voting and election for the functions of choice and preemption.