No, it serves for output, like a monitor or printer
it is an output device
An output.
It is an output
A headset
yes, it's similar to a monitor, and there is no way to input data from projector.
If you have a projector TV then it would depend on it's connections. A PS3 will connect with an HDMI to a HDTV projector style TV with a HDMI input with the single cable. If you are not talking about a Projector style TV this may not be possible If your projector has an HDMI input and HDMI passthrough, it would be better to go from the ps3 to the projector and then pass through to the tv.
yes
Connect the VGA monitor out on the PC to the VGA input on the projector. If your projector does not have a VGA or DVI input, the resolution of the projector is probably not high enough to adequately display the screen of a computer.
You need a HDMI Input.
To connect a rear projector TV to modern HDMI sources, you'll need an HDMI to VGA or HDMI to composite adapter, depending on the input options available on your projector. First, connect the HDMI output from your device (like a streaming box or laptop) to the adapter. Then, connect the adapter to the projector using the appropriate cable (VGA or composite). Ensure that both the projector and the source device are powered on, and select the correct input source on the projector.
It is a Output device as it projects images and text.
A Data Projector (referred to as Digital Projector) is a projector that gets its image from a Digital Source, such as VGA (computer), RCA (the most common A/V input), S-Video (another form of video input), and some others. These projectors are most commonly used along with DLP or LCD Technology.An Overhead Projector is an older style of projection, common in Education (Schools). These projectors are totally manual and require you to put a transparent image onto glass to project the image overhead.