Projector:
A output device takes images from computer and displays it in wall, other surface which is light colored.

How does projector gets input?
HDMI cable, VGA cable.

HDMI cable:
High definition multi-media interface.
Used for sending audio and video.
Transmit data by digitally.


Types of HDMI cable:
Standard.
Standard with ethernet.
High speed.
High speed with ethernet.

VGA Cable:
Video graphic array port.
Used to transmit video analog signals.


DVI Cable:
Digital visual interface.
Used to transmit the video data digitally.
But it does not found in all cables.

 
How to reverse image?
In projector select menu.

Keystone horizontal and vertical:
Keystone means apparent distortion of an image caused by projecting it onto angled surface.
By keystone adjustments only the image can be in good.

 
Apparent distortion:
Apparent means clearly visible.
Distortion means not in correct order.

Zoom and focus:



How to extend second screen setting:
Click Windows + p.





















For PC screen allows user to see only computer screen.
Duplicate option allows user to duplicate the user's monitor screen to an external device.
Extend option gives the user the ability to expand their desktop viewing to more than one computer.
Second screen only allows to view other screen not the computer.