Types of data

Types of data

1. Carlos Abraham Brenez Mancilla A01631069 Group 7 Logical Computational Thinking

   • Resources: Cárdenas D. et al. (2015) Logical Thinking second edition. Ibook.

2. How are data entered in the computer?

   • In the past computers used numbers as a data entry but with the new technology we have many data and input methods.

3. Data classification

   • We can entered into a computer data which can be classified as: number, alphanumeric, audiovisual, or physical.
     • Numerical data refers to numbers that are used for operations, some examples, kilometers run, weight, height.

4. How are data processed?

   • Before the data can be convert to information some processes have to be carry out.
     • Data entry: Is when and input device give an operation this operation goes to the RAM memory so it can be processed.
     • Data processing: Here is where the operation is read by the program an tell us what to do.
     • Output generation: Here is where the result is show by an output device

5. How are data stored on a computer?

   • Is when the computer saves the processed arithmetic and logical operations and are stored at the RAM memory to be used later.

6. What is a variable?

   • Is a symbolic address, and can take different values temporary, because this variable can change.

7. What is a constant?

   • The constants as the variables are represented by a symbol the difference is that the constant never change during the resolution

8. Guidelines for assigning names to variables and constants.

   • We have to keep this in mind, every constant and variable needs a name that identifies it, we have some rules to follow.
     • They can only contain alphanumeric or numeric characters and underscore.
     • They always have to start with an alphanumeric character.
     • They need to be related to the value that is being saved.
     • They should not be longer than 255 characters

9. Types of data.

   • Numeric.
     • Interger and real.
   • Logic.
     • Boolean.
   • Character.
     • Character and string.

10. Numeric.

    • The data can be interger or real
      • Interger: 50, -504, 876
      • Real
        • Real: 50, .50, -32.324

11. How much space do the data utilize in the memory?

    • Once the data is saved and has their respective variables the memory they use depends on the type the data there are being stored.
      • Character: 1 Byte per character. Int: 4 Byte. Boolean: 1 Byte.

12. Alphanumeric .

    • Character data only one character it could be a numer, letter or a special symbol.
      • A, 1, #
    • String data combine alphabetic and special numeric characters.
      • A01631069, Las Cañadas #200

13. Logic

    • Boolean numbers enter here, they only have two values true or false.

14. How to assign value to variable or a constant?

    • The way a variable or a constant gets their value is through the assignation operation. They are represented with a left arrow and the value is next to them,
      • (8.4, M, Juan), variable (Weight, Gen, Name) expression (X*Y, (A+B+C)/3)