Types of data

Types of data

1. What is data?

   • Facts and statistics collected together for reference or analysis

2. Numerical data

   • Whole or decimal, positive or negative numbers
   • Height, weight, coefficient equation

3. Simple "Not structured"

   • Numeric
     • integer and real
   • Logic
     • Boolean
   • Character
     • character and string

4. Complex "Structured"

5. Alphanumeric

   • Character or string
   • Combination of letter, numbers, and special characters
   • Name, sex, adress

6. Audiovisual data

   • Listen to or watch
   • Voice, music, graphs, pictures

7. Physical data

   • Can be taken from the environment
   • Light intensity, temperature, blood pressure

8. Variable

   • Represents the symbolic address of memory location; its contents may change

9. Constant

   • Values that do not change during the problem resolution process

10. How is data processed

    • Data entry
      • Through an input device
        • Data goes straight to the RAM memory and wait for being processed
    • Data processing
      • Processor follows instructions from a program
        • Arithmetic/logical operations necessary to transform them to information
    • Output generations
      • Results are displayed through an output device