1-Information and Communication Technology

  1.1 Data and Information

 The numbers, words, images and symbols which do not bear a meaning, when standing alone are called data.While we can arrive at meaningful information by arranging and processing data, we can use them to make decisions also.

Example 1

                  It will be difficult to get an idea about the subjects and marks if names and marks are written separatly on term test results.

 Ravi 78, 90, 79, 67, 76, 98 Rizwan 87, 70, 80, 75, 80, 80 Krishan 76, 78, 67, 80, 79, 76

 But these names and marks can be tabulated as follows:

Name Language Mathematics Science History Health English

 Ravi         78         90                     79         67         76     78

 Saman     76         78                     67         80         79       76

 Rizwan     87         70                     80         75         80      80

This table shows some information about the marks of students. However, in order to arrive at some meaningful conclusion, this may not be sufficient:

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