Special class sessions can be recorded for use in the future, also. This equipment can be located in the room on a cart and plugged into the system as an auxiliary input. Films and slides may also be shown as an in-class presentation by projecting the film or slides onto a projection screen and focusing either the teacher, student, or visual presenter camera on the screen. Use of computers as an auxiliary input requires special equipment. Computer monitors have different resolution capabilities and different scan rates than television monitors.
Special equipment is needed to interface the two types of video.
Output from high resolution computers must be converted down to the NTSC video standard, or multiscan monitors must be used. Go on to next section. Return to Table of Contents. Return to Summary.