Page 15 - iPrime_V2.2_class7
P. 15

•  Plotter

                      A plotter is a specialised printer for producing high-quality drawings and blueprints. It is
                      larger and more expensive than standard printers but offers superior print quality. Ideal for
                      desktop publishing and architecture, it creates detailed and precise plans.
                      There are mainly two types of plotters: Drum Plotter and Flatbed Plotter.














                                        Drum Plotter                           Flatbed Plotter

                    Speakers: They produce music, speech or other sounds from
                   the computer. These are also used for listening to songs and
                   watching movies on a computer.


                                                                                                      Speakers
                                                    Projector:  It  is used to  project  the  output  from  a  computer
                                                   screen onto a large screen. It takes the input from the computer
                                                   in the form of an image and displays it on a widescreen. It is
                                                   widely used in schools, offices, and cinema halls.
                         Projector
                 Storage Devices


                 Storage devices are used to store data on a computer. There are a number of storage devices
                 such as the hard disk, CD, DVD, Blu-ray, and Flash Drive.
                    Hard Disk: It consists of one or more magnetic disks called platters.
                   Each disk in the pack has top and bottom surfaces on which data
                   is recorded using a magnetic head. It is usually used for permanent
                   mass storage. The most important function of the hard disk is to
                                                                                                      Hard Disk
                   store program and data files.
                   It comes in a variety of sizes with storage capacities as high as 5 TB
                   (TeraByte) or even more. The CPU accesses data stored on the hard
                   disk much faster than it can access data on a CD.
                   External hard disks are also available. They can be connected to
                   a computer with the help of a USB port.
                 Clickipedia                                                                      External Hard Disk



                  The first hard disk was introduced by IBM in 1956. It could hold 5 MB of data.



                                                                              Computer—Hardware Components         13
   10   11   12   13   14   15   16   17   18   19   20