长期以来,电教工作者主要使用的设备是投影仪、摄像机、录像机、特技机等,主要使用的信息介质媒体是投影片、录音带、录像带。而随着计算机技术的发展及其在全社会的广泛应用,计算机在电教工作中的作用日益突出。计算机在课堂教学、电视制作和教学软件制作方面都可以发挥巨大作用。例如:用一台计算机加上一台大屏幕投影仪,可以构成一个信息化的教室。计算机在这里起到两个作用,其一是作为控制台,可以连接各种设备, For a long time, the main equipment used by audio-visual workers is projectors, video cameras, video recorders, stunt machines, etc. The main media used for information media are transparencies, audio tapes and video tapes. With the development of computer technology and its wide application in the whole society, the role of computer in audio-visual education has become increasingly prominent. Computers can play a huge role in classroom teaching, television production and teaching software production. For example: With a computer plus a large screen projector, you can form an information classroom. Computer here plays two roles, one is as a console, you can connect a variety of devices,