As I spoke of last week, this will be a continuing subject and we will see how it goes. We will start at the rear of the computer. At the top you will see a three prong plug socket this is for plugging in the computer to an electrical socket.
To the left is the power supply. There is a small fan inside which, helps in cooling the power supply.
Below the power supply is the main cooling fan unit. Some manufacturers may not have this feature.
The next port is what is called a PS/2, it is a six pin (Mini-din Connector) These are color coded, purple is for the keyboard, green for the mouse.
Further down is a nine pin connection, this is known as a serial port
This next connector is a fuchsia colored connector called a parallel port LPT this port is used for a specific printer socket. A USB(Universal Serial Bus) is what is now used instead of the parallel port LPT
The next is the VGA (Video Graphics Array) VGA was developed by IBM, in 1987. It consists of a 15 pin plug, which will be found on some older computers, and Monitors. This can either be used to connect to a LCD (Liquid Crystal Display) or a CRT (Cathode ray tube) Monitor.
DVI (Digital Visual Interface) is used to connect to a LCD Monitor or Projector. This device can also connect to VGA by using a DVI adapter to VGA. Some Monitors have both.
Next are two color coded inputs, the first is used for the microphone, it will be pink, the green one is for connecting a set of speakers.
The Ethernet plug, or a network connection allows access to the internet. A RJ-45 Cord is what connects the exterior modem to the computer. It looks like a telephone plug, however is much bigger. These are either supplied by your local Cable Company or something you would buy yourself at a electronics’ store.
Next should be what are called as USB or Universal Serial Bus, these are used to connect a mouse, keyboard or other electronic devices.
At the bottom are four slots, these are for inserting a dial-up modem, a new graphic’s card. Some motherboard’s may have a PCI slot (Peripheral Component Interconnect), and a AGP slot (Accelerated Graphics Port) while, others may have just one this would depend on the motherboard or Manufacturer of the computer.