Different Output Display Devices and Display Ports & Connectors
In this blog, we will cover about two things that are: Display Devices and Display ports
Display Devices
As we are familiar that we can interact with the computer system through the Display Devices. These display devices enable us to communicate with the computer through the graphical interface. There are different types of Display Devices which are used to interact with the computer system or any other device. Some of them are following
- Monitor
- Flat panel Display (FPD)
- Cathod Ray Tube (CRT)
- Projector
- Touchscreen
Monitor
This is mostly used as an output display device. There are further two types of Monitors available which are discussed following
1. Flat Panel Display
A flat-panel display (FPD) is very thin, lightweight, and very little power device. A flat panel display has common types like LCD (Liquid Crystal Display), LED (Light Emitting Diode) and OLED (Organic LED). LCD uses a liquid crystal molecules for displaying, LED uses light emitting diodes for display while OLED uses a special organic compound for display.
2.CRTs
A CRT monitor is heavier than FPD because it contains a large cathode ray tube. It uses electron guns to activate phosphors behind the screen, causing each pixel on the monitor to generate red, green, or blue.
Projector
Projectors shoot an image out the front and onto a screen or some panel. It provides greater display as compared to monitors and they are mostly used for presentations or meetings. The qualities that matter most are brightness of projector and its throw ( image size at a given distance from the screen).
Touchscreens
A touchscreen is both an input device and an output device. It has a touch-sensitive surface that we use to interact with the operating system. The touch-sensitive part of the screen is called the digitizer which contains sensors that record our touch. There are basically two types of touch-sensitive screens, one is resistive screen which consists of two thin, flexible sheets of plastic, with a gap between them while the other is capacitive screen which uses the electrical properties of the human body to alter the capacitance of an electrostatic field on the screen.
Display Ports & Connectors
There are different ports and connectors which we use for displaying different graphics like images, videos etc. Some of them are discussed bellow.
1. DVI (Digital Visual Interface)
This connector carry only the video signals in three ways. One is DVI-D (digital), other is DVI-A (analog), and the third is DVI-I (integrates digital and analog).
2. HDMI (High Definition Multimedia Interface)
HDMI can carry both video and audio signals. This is mostly used for theater displays as well as in monitors. This connector has its own special kind of port on the system.
3. S-Video
It stands for Separate video. It can also carry both video and audio signals but its resolution is low as compared to the HDMI interface. It has 4-pins.
4. Component (RGB) Video
This uses three connectors of three colors Red, Green and Blue. These are mostly used in Televisions and other displays. These are not suitable for PC display. These carry only video signals.
5. Composite Video
It is simply yellow color connector and its yellow color port in the RCA cables. It is used only for video signals. There are others RCA connectors (Red and white) which are used with the composite video connector in order to carry audio signals. Mostly used in the Televisions and Satellite Receivers.
6. VGA (Video Graphics Array)
These are mostly used in the PCs and Projector displays. It carries analogue signals for displaying. It has 15 pins (5 pins in each 3 rows). It has its own special types of port on the system.
7. Thunderbolts
These is mostly used in the Macintonish PCs and many small devices. These can carry both video and audio signals as well as data from one device to another. These connectors have their own ports with a special symbol on them.
8. Display Ports
These port work same as Thunderbolts and its shape is almost same as USB port but with slight changes on one corner. These are used for displaying after the thunderbolts.
9. USB ports
As discussed in the previous blog, it is one of the mostly used technology for transferring data and visual signals in todays era. It has different types and different generations.
Thanks for Reading…!!!
