Plotter

       plotter

                   A plotter is an output devices that is used to print high quality large graphics  in a variety of colors. Plotter are typically used to print engineering drawings graphics machine parts building designs maps and large posters etc. Such large printing  is not possible with printer. Plotter are more expensive than printers.

       Types of plotter

                             Different types of plotter are as follows:

• Flatbed plotter
• Drum plotter

               Flatbed plotter

                                

                                                    Flatbed plotter is used to plot or draw image on the paper. It contains pens for drawing images. The paper is placed on table-like surface. The software instructs the pens to move down on the paper. The pen than moves on the paper for creating images. Most flatbed plotter have one or more pens of different colors and width.

             Drum plotter:

                                                  Drum plotter  uses a rotating drum or cylinder. The drawing pens are mounted on the drum. The pens move to the left and right as the drum rotates. This movement creates the desired images. The advantage of drum plotter is that the length of the plot is almost unlimited. The roll paper can be used to draw very lengthy  images. The width of the images depends on the width of the drum. It is used to print pan flexes of large sizes.

           Data projectors:

                                          Data projectors is an output devices that projectors the output of computer screen onto a larger screen. The output projectors by data projectors can be viewed by a number of people very clearly. Data projectors are used in classes to deliver lectures to many students etc.

            Types of Data projectors:

                                          Two  types of data projectors are as follows:

• LCD projectors
• DLP projectors 

     

              LED projectors:

 

                                                

                                                     LCD projectors for liquid crystal display . LCD projectors uses liquid crystal display technology. It is attached to the computer directly. It uses its own light source to display the information shown on the computer screen.

             DLP projectors:

                                                    DPL stands for digital light processing. DPL projectors uses tiny mirrors to reflect light. It produces brighter and sharper images than LED projectors.

   

              Magnetic Disk

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