ports of a computer

HDMI
 

High Definition multimedia interface, it is used to transfer multimedia content with out delay in transmission. It is used in Blue ray, projectors and other multimedia interfaces

 PS/2

 

This port came form IBM's personal system/2, this was replacement to DE-9 / RS port,

this port has 6-pins, it is used as a standard port for connecting Mouse & Keyboard

now USB is replacing these port.

 

 RJ45 port:

It is a standard socket used to communication in a network,

all switch and routers, desktops and other network devises uses RJ45 socket

a special cable(CAT 5, CAT 6) support this socket of RJ45.

SATA

serial ATA is a standard port used to connect storage devises such as hard disks, SSDs, external devices.

Using SATA data transfer rate is high that traditional ATA ports

 serial port:

 serial port was an historic port user for communication where the data is sent serially 1byet .
USB, Ethernet socket, modems, printers etc, where they connected using serial port 

USB:

This port is an industry standard post developed to gener computer connectivity,

it was developed in the year 1996, all the Keyboards, Mouse, Camera etc…

It has 4 pins 

 VGA

 

Video Graphic Array, is a general 15 pin port used for displaying on a monitor or projector ,

it is embedded in laptops, desktops, projectors, graphic adapters and other display devises

now HDMI port is replacing this port .