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随着电子技术的日新月异的发展,电子行业专业愈分愈细,尤其是计算机技术,使人们改变了许多思维习惯。如今,学术会议,教学培训,商务演示及工业监控等现代化的信息交流均需电子化,作为计算机外部设备之一的大屏幕投影机就是现代化信息交流的新型必备工具。 什么是大屏幕投影机 就是将人们所需交流的资料,图片,实物,动态画面等交流信息和VCD,LD或DVD,VCR等视频信号和计算机信号通过投影机来播放成大屏幕动态画面和计算机画面,(最大画面可达到300英寸)远远大于电视机,电脑显示器(34英寸),故称大屏幕投影机。其适用于学术会议,大学院校,中小学的多媒体教学,电子化培训,家庭娱乐,商务演示及工业监控等。 大屏幕投影机有几大类 大屏幕投影机可分为:胶片式投影仪,视频投影机及多媒体投影机。 胶片式投影仪 在70年代末就有出售了,是目前普及率最高的教学用具,用制作好的投影胶片,进行投影演示(3M
With the rapid development of electronic technology, the electronics industry is getting more and more professional, especially computer technology, so that people have changed many habits of thinking. Nowadays, modern information exchanges such as academic conferences, teaching and training, business presentations and industrial monitoring all need to be electronized. Large-screen projectors, one of the external devices of computers, are a new and necessary tool for modern information exchange. What is a large-screen projector is the exchange of people’s information, pictures, objects, dynamic images and other exchange of information and VCD, LD or DVD, VCR and other video signals and computer signals through the projector to play into a large screen dynamic screen and computer Screen, (maximum screen up to 300 inches) is much larger than the TV, computer monitor (34 inches), so that the big screen projector. It is suitable for academic conferences, universities, multimedia teaching in primary and secondary schools, electronic training, home entertainment, business presentations and industrial monitoring. There are several types of large-screen projector large-screen projector can be divided into: film projectors, video projectors and multimedia projectors. The film projector was sold in the late 1970s and is currently the most widely used teaching aid, with projected transparencies for projection presentation (3M