Screen image projector is an output device, which is used to project information from a computer on to a large screen, so that it can be simultaneously viewed by a large group of people. This output device is very useful for making presentations to a group of people with the direct use of a computer. Before such an output device was available, the contents of a presentation were prepared using a computer, the presentation material was then printed on a printer, the printout was next reproduced on overhead projector transparency sheets by using a copy machine, and finally, the presentation was made by using an overhead projector. Special marker pens had to be used for marking certain portions of the contents on the transparency sheets during the presentation.
A screen image projector greatly simplifies this job. It can be directly plugged to a computer system, and the presenter can make a presentation to a group of people by projecting the presentation material one after another on a large screen with the help of computer's keyboard or mouse. With this facility, the presenter can also directly point to mark or edit certain portions of the contents of the displayed material during the presentation to make the presentation more understandable. Additionally, a full fledged multimedia presentation with audio, video, image and animation can be prepared and made by using this facility to make the presentation more lively and interesting, and also greatly simplify the job of the presenter.
Screen image projectors have become a common presentation equipment today. They are commonly used with portable notebook computers to quickly setup a modern presentation facility at any place with great ease. Like monitors, screen image projectors provide a temporary, soft-copy output.
0 Comments