via something like this: Composite and Y/C (S-Video) to VGA Monitor Converter
http://www.allthings.com.au/Catalogue/Monitors/vid%20to%20vga%20plus.htm
You will have to get a VGA and RCA cable. You can connect the VGA cable from your laptop to a VGA/RCA adapter, and the RCA from the adapter to the projector.
Normally it is an output device. However a touchscreen monitor is both an input and output device.
input
A normal computer monitor is simply an output device; it takes no input from the user. A touchscreen monitor, on the other hand, is both an input and an output device.
The monitor is an output device......
Output.
A monitor is the "gateway" to your computer. It is the output of your computer. E.g. a mathematical formula has an input, an output and an algorithm. The keyboard & mouse is the input, the computer is the algorithm, and the monitor is the output.
The monitor is an output device......
output
A monitor is an output device. A touchscreen monitor is different. The touch panel, which is installed over the monitor is an input device, but the monitor itself is strictly an output device.
input. Anything that gives information to your PC is input. The monitor or a printer is output.
A monitor is an output device.
monitor and mouse