computer science 2

computer science 2

1. Data- consist of raw facts and figures which are yet to be processed and has no meaning

2. Information- consist of raw facts and figures which are processed and has meaning, this gives data a meaning

3. Knowledge is the information that has been shared between people

4. Integer- data types which deal with whole number and not decimal numbers.eg if integer data types -9,-900, 2, 100, 300.

   • Why is integer data type is used more then real data type? The time taken for computer to process the information of a rea data type is quite longer then integer data type and to store a large number in real data type takes up more space. Therefore, user prefer integer data type

5. Real data type- A real data type contains numeric data in decimal form. It is used where more accurate information is required. Real data types cannot store actual measurement symbol (g, kg, s, m, etc.)

6. Boolean data type- Boolean data type represents the value in two form which is true or false / yes/no.

7. String- A string is capable to store any alphanumeric character such as text, numbers or symbols

8. Variables- are data entities whose values can be changed when a program is compiled

9. Compiler- a computer program that translates a computer program written in one computer language which is also called as source code.

10. Constants- data entities, the values of which cannot change during a program’s execution. That means the values are constant.