What are Computer Ports?
In a computer, there are some ports, connectors, and buttons on the back side and front side of the CPU, about which you may not have complete information. So in today's post, we are going to know about all the computer ports present in the computer.
Today we will know in detail what are Computer Ports? And what is their use?
So without wasting any time let us know what are computer ports?
What are computer ports?
A computer port is a connection point through which we connect external devices to a PC or computer.
For example, if you want to connect a keyboard, mouse, or pen drive to the computer, then you will need a Port or Connection point through which you will be able to connect these devices to the computer.
So a port acts as an interface between the computer and external devices. It is also called the Communication Port because it is the point from where the external device connects to the computer and through which data and files can be transferred and exchanged between the computer and the external device.
Types of Computer Ports
We can divide Computer Ports into two parts on the basis of prototype or how communication is taking place -
- Serial Port
- Parallel Port
Serial Port
This port connects external devices to the computer using serial protocol. Only one bit of data can be transferred at a time in this port.
D-subminiature or D-sub connector is a good example of a serial ports. Which carries RS-232 signals.
- It is used for external modems.
- Its two versions are available in the market – 9-pin and 25-pin models.
- Data travels at a speed of 115 kilobits per second.
Parallel Port
In this port, more than one bit of data can be transferred between the computer and the external device at the same time, hence it is called Parallel Port which allows parallel communication.
- These are basically used to connect devices like scanners and printers.
- These are also known as printer ports.
- A 25-pin model is available.
- Data travels at a speed of 150 kilobits per second.
Display Port
It allows video and audio to be transmitted from the device to the display screen. This is an advanced technology that has been developed as an alternative to VGA and VGA.
A display port can be seen on laptops, desktops, tablets, monitors, etc. It has a 20-pin connector and offers better resolution than a VGA port.
Its latest version is DisplayPort 1.3 which can handle resolutions up to 7680 X 4320.
HDMI port
HDMI (High Definition Media Interface) has been developed to connect high-definition devices like digital cameras, computer monitors, and gaming consoles.
It carries uncompressed video and compressed/uncompressed audio. This port has 19 pins available. Its latest version is HDMI 2.0 which is used to carry digital video signals up to 4096 × 2160 resolution and 32 audio channels.
USB Port
Through USB ports we can connect almost all types of external devices like hard disks, printers, monitors, keyboards, mouses, etc.
USB Port was first introduced in 1997. In this, data travels at a speed of 14mb/s. Today, it has replaced the PS/2 connector, game port, serial and parallel ports, etc. Most computers provide two types of USB ports – USB Type A and USB Type C.
PS/2
These are basically used to connect the mouse and keyboard in old computers. It is also called a mouse port.
This security is greatly appreciated by the organization. These are 6-pin mini Din connectors that are used to connect a keyboard and mouse to a PC computer.
These connectors are color-coded, for example, green color is used for the mouse, and purple color connector is used for the keyboard. At present, it has been replaced by a USB port.
VGA Port
This port is commonly found in computers, projectors, and high-definition TVs. This is a D-sub connector which is also called DR-15.
It has 15 pins which are arranged in 3 rows. There are 5 pins in each row. It is mainly used to connect the monitor to the CPU. Most LCD and LED monitors come with VGA ports.
VGA can only carry analog video signals up to a resolution of 648X480 so it does not assure high quality.
However, these ports do not assure high picture quality as VGA can only carry analog video signals up to a resolution of 648X480.
As the demand for video quality continues to increase, VGA ports were gradually replaced by more advanced ports such as HDMI and Display Ports that assure higher video quality.
VGA port was introduced by IBM in 1987. It is similar to a serial port connector however a serial port connector has pins and a VGA port has holes.
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Conclusion
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