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Computer Graphics



                              (e)  Which of the following functions provide only a single value as a real number?
                                    (i)  Valuator function
                                    (ii) Choice or button function
                                    (iii) Pick function

                                    (iv) Locator function
                          3.11   Review Questions
                          1.  "The  graphical interactions happen  either  by positioning  the items or by pointing at items."
                              Discuss.
                          2.  "The graphical outputs can be of two forms." Justify.
                          3.  "Random scan displays refer to direct view storage tube display and calligraphic display." Explain.
                          4.  "A raster scan display system is the rectangular pattern of image capture and reconstruction in
                              televisions". Explain.
                          5.  "There are various modern printers that make use of new printing technologies." Justify.
                          6.  Analyze the different types of projectors.
                          7.  "When the LCD monitors are run continuously for long time with a fixed image, a trace of electric
                              charge is created near the electrode in the LCD module." Explain.

                          8.  "Resolution refers to the sharpness and clarity of an image." Discuss.
                          9.  "The term “refresh-rate” refers to the display screen which is being updated and refreshed".
                              Explain.
                          10.  "The aspect ratio of the image is defined  as the ratio of the width of the image to its height."
                              Discuss.

                          11.  "Frame buffer refers to the part of memory that is reserved for holding the entire bit-mapped
                              image that is sent to the monitor." Discuss.
                          12.  "The functional capabilities of I/O devices are divided into four types." Justify.
                          Answers: Self Assessment

                          1.  (a) True   (b) True   (c) False   (d) True        (e) False   (f) False
                          2.  (a) Pointing   (b) Soft copy  (c) Raster-scan   (d) Solid ink  (e) Ionic impurities
                          3.  (a) Trackball          (b) Direct View Storage Tube Display
                              (c) Dye-sublimation printer (d) Refresh-rate      (e) Valuator function
                          3.12   Further Readings



                                      Bhatia, K, I.K., Computer Graphics, International, Second Edition
                                      Hearn, Donald, & Pauline, M. Baker (2008). Computer Graphic, C version, 2nd Edition
                                      Godse, A.P, (2009), Computer Graphics, Technical Publications
                                      Ziang, & Roy, Avadhani, P.S., (2006). Computer Graphics, The McGraw-Hill Companies,
                                      2nd Edition
                                      http://www.unm.edu/~tbeach/terms/inputoutput.html
                                      http://www.ehow.com/list_7184354_output-devices-computer-graphics.html
                                      http://www.britannica.com/EBchecked/topic/288883/inputoutput-device
                                      www.cse.iitm.ac.in
                                      http://www.computerhope.com/jargon/o/outputde.htm





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