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Laser Printer
              A laser printer works just like a photocopy machine that prints the output at high-speed
              and good quality. It creates images using a laser beam and powdered ink called toner. It
              is more expensive than inkjet printers and can be used for home or business purposes.



                                                                                                      Laser Printer
                                             Plotter
                                             A plotter is an output device similar to a printer but used to print vector graphics
                                             like  architectural designs, maps,  computer-aided  drawings etc. by  plotting lines
                                             using  a  pen.  A  printer  uses  the  technology  of  joining  closely  spaced  series  of
                                             small dots to print, whereas a plotter draws using a pen. Multicolour plotters use
                                             different-coloured pens to draw in different colours.
                       Plotter

              Speakers
              Speakers are an output device that produce sound waves in the form of an output
              which  can  be heard  by a listener.  Speakers can  be attached  to  a computer or to
              any other system like smartphones, tablets, Smart TVs, etc. to enhance the volume
              and the quality of audio output. The different kinds of speakers range from simple,
              two-speaker output devices to surround-sound multi-channel units.
                                                                                                      Speakers

                                             Projector

                                             A projector is a display device that projects a computer screen onto a flat surface,
                                             like a whiteboard  or wall.  It is  most commonly  used  in  home theaters or in
                                             organisations for official presentations.
                      Projector



                      COMPUTER MEMORY

              Computer memory holds raw data before it goes for processing and after processing it contains information which can
              either be sent to output devices or stored in secondary storage devices for future use. There are two types of memory
              in the computer—primary memory and secondary memory.

              Primary Memory
              This type of memory is necessary for a computer to work. It is also called the Internal Memory. This is the actual place
              where the data is stored before it is taken to ALU for processing. Primary memory is of two types: RAM and ROM.

              RAM (Random Access Memory)
              It is temporary in nature. The computer holds information in this memory and gets it
              when needed. It remembers what you tell them and can even change to remember
              new information. It is volatile in nature, which means that data will be erased when
              the computer is turned off. That's why you always save your work! RAM is considered
              "random access" because any part of it can be accessed randomly for reading or writing   Random Access Memory
              of the data.



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