A range of devices can be connected to the output ports. Some are shown below. They are usually connected to one of the serial or USB ports although the printer and keyboard have separate ports. Can you think of any other devices that can be connected to a computer unit?

Output ports, are found at the back of the computer.
A good example is a parallel port which is where the printer is connected to the computer. It is known as an output port because data from the computer travels down the ribbon cable between the computer and the printer and is printed on paper. A printout is also known as a hard copy.

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