The word monitor means different things to different people and it is important for the teleprompter operator to be very clear about these differences to all parties involved.
Many laptop computers have the capability of putting out a signal to a large computer monitor.
The logic for this is that the screen of the laptop is small compared to the various sizes of computer monitors that are available and the larger monitor is easier to read and has more screen real estate. Not all laptops will drive all sizes of computer monitors. Computer monitors are identified by various terms such as EGA, VGA, SVGA, or MultiSync. You must carefully check the laptop's capabilities with that of the larger computer monitor that is to be used. A computer monitor is not a TV set.