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            e\L-lovely-eng\comm5-1.pmd  IInd 16-9-11  IIIrd  27-12-11 IVth 4-1-12


            Information and Communication Technology Applications




                                    •  Printer is the basic output device, which is used to print information on papers. Printers are
                   Notes              essential for getting output of any computer-based application.

                                 5.5 Keywords

                                 QWERTY Keyboard: It is consists of the standard typewriter layout plus some additional keys.
                                 Dvorak Keyboard: The Dvorak keyboard was designed to speed typing by placing the most
                                 frequently used keys on the home row.
                                 Joystick: Joystick is also a pointing device, which is used to move cursor position on a monitor
                                 screen.
                                 Plotter: Plotter is an important output device, used to print high quality graphics and drawings.

                                 5.6 Review Questions

                                  1.   Name the basic input devices of a PC and explain their functions in brief.
                                  2.   What is a trackball ? How does it differ from mouse and joystick?
                                  3.   Explain the difference between Character, Line and Page Printers. Give examples.
                                  4.   Compare the advantages and limitations of a mouse and a keyboard as data input devices.
                                  5.   What is a QWERTY keyboard? How does it differ from Dvorak keyboard?
                                  6.   What is scanner ? How does it work?
                                  7.   Describe the working of a Digital Camera.
                                  8.   Write the functions of the following input devices:
                                        (a)  MICR
                                        (b)  Bar Code Reader
                                  9.   What is a plotter? Describe various types of plotters.
                                  10.  Write a short note on emerging input and output devices of computer.

                                 Answers: Self Assessment
                                  1.   input device            2. dark line                  3. digitizer tablet
                                  4.   output device


                                 5.7 Further Readings




                                               1. Devarajan, (G). Information technology in libraries. Delhi: Ess Ess, 1990.
                                               2. Ravichandra Rao, (IK): Library automation. New Delhi: Wiley Eastern.
                                               3. Rowley, (J.) The electronic library. 4  ed. London: LA, 1998.
                                                                             th
                                               4. Satyanarayana, (NR): A manual of computerisation in libraries.



                                                http://www.dce.kar.nic.in/new%20files/Chapter4-9-07.pdf
                                                http://www.ced.ncsu.edu/seniorsurf/adv4/index.htm
                                                http://www.ehow.com
                                                http://www.ehow.com/info_8015518_input-output-devices.html



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