when you use a normal projector any teacher uses, is there a program you normally have to install for the model or does it usually work right away after you plug it in?
If it is VGA plug, you are good to go. The projector may only support 600x800 SVGA or even 480x640 VGA monitor resolution and that would have to be set from the computer "control panel" as most computers are running XVGA or higher resolution modes these days.
If you plan to run it from your laptop, be aware that the VGA port on laptops are toggled on and off from the keyboard. The default position is usually "off", so you will need to find the toggle before it will come on, its an "F" key on my computer.
Projector? Like one that connects to a computer?
It is just a monitor. The computer's VGA port connects to the projector's VGA port with a VGA cable - like a monitor. For basic use to display what is on the computer, there is nothing to install on the computer.
Some projectors have a wireless mouse set-up that might need to be installed for remote control of a mouse...
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