Ports
First I will start with the basics, the power supply, this is simple, it is where the power cable goes into the system to give it power, and without it you wouldn’t have power to your system therefore won’t be able to use it.
Next I will explain the PS/2 ports, there are two of these ports, one that is purple and one that is green, the green one is the one that you plug your mouse into, and the purple port is the port that you plug your keyboard into, a mouse is something that you will use to control the ‘mouse’ on the screen, and you will use the keyboard to insert characters into your computer to give it instructions.
Next it’s the VGA port, this port is a port that you plug your monitor into, it basically tells the display monitor what it should be showing you, most monitors support VGA, but if your computer has a different port for a display then you should check the port before you get the monitor.
Next it is the parallel printer port, this is self-explanatory, it is what you plug old fashioned printers into, and it sends information to the printer about what it should print off, newer printers these days use USB ports as they are faster and easier to use.
Next I will explain about USB ports, what they are is things you would plug accessories that you could purchase for a computer, for instance, some mouse’s use USB and flash drives use USB ports, they are universal and almost all things can be changed to use USB ports, so it is good to make sure that your system has them.
Next I will explain the Ethernet port; this is the port that you would use to connect your computer up to other computers, or make a network of computers, using an Ethernet cable.
Last I will explain the input/output sound, it’s pretty simple, you would plug microphones in here and you would also plug in any external speakers that you might have. They need to be a 3.5mm jack so make sure it is the right size for the port. an example of a computers ports is shown below:
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