Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 80 - 2612_Digimind
P. 80

    What if you could use computer to create secret codes that only your friends
                                        could decode? What would your code say, and how would you use it to
                                        communicate?

                                               1.   When you have a message that looks like this: "HAPYP,"
                                                   what do you do to make it readable?

                                                   a.  Colour it                   b.  Decode it
                                               2.   In number grid, do we usually start with the number at the
                              uiz    Bee           centre?

                                                   a.  Yes                         b.  No

                            REVISIT

                        ▶   In a number pyramid, the number in each space is the sum of the two numbers below
                           it.
                        ▶  In a number grid each grid is replaced by the value of its result.

                        ▶   Decoding is the process of converting a hidden message to a meaningful text.

                                                        ASSESS YOURSELF

                      1.  Tick ( ) the correct option.

                          a.   The hidden  message  or secret  message  can be in the form of a symbol,
                             number, picture, letter, or a                         .

                               (i)  Pattern                                   (ii)  Sequence

                              (iii)  Instruction                             (iv)  Decoding

                          b.   If      1          2          3  then the secret message

                             will be decoded as                         .

                               (i)  1223113                                   (ii)  2132311

                              (iii)  2132113                                 (iv)  2131223

                       78   Computer Science-II

| 75 76 77 78 79 80 81 82 83 84 85 |