DATA

DATA

WHAT IS IT?
1. Latin datum that means "what is given"
2. Facts and statistics collected together for reference or analysis
3. Information
HOW DOES IT ENTER THE COMPUTER?
1. Through many different input methods
CLASSIFICATION
1. Numerical
  1. Numbers
  2. Arithmetic and/or logic operations
2. Alphanumeric (text)
  1. Combination of characters
  2. Numbers, letters and special characters
3. Audiovisual
  1. We can listen to and watch
4. Physical
  1. Can be taken from the enviornments
HOW IS IT PROCESSED?
1. Data entry
  1. Through input device
  2. Straight to RAM memory
2. Data processing
  1. Follow program instructions
  2. Perform Aa/oL operations
  3. Operations transform into information
  4. Results stored in RAM memory
3. Output generation
  1. Info. displayed through an output device
HOW IS IT STORED?
1. A&L operations creates results that are stored in the RAM memory
2. Variable
  1. Identifier
  2. Represents symbolic adress of a memory location
  3. Save values in temporary way
3. Constant
  1. Values that don't change
TYPES OF DATA
1. Numeric
  1. Simple
    1. Numeric: inter and real
    2. Logic: boolean
    3. Character: character and string
  2. Complex
    1. Integer numbers
      1. 50, 1000, -78, -102
    2. Real numbers
      1. 5.5556, -2.87, -9.023
2. Alphanumeric
  1. Character
    1. Digits and special symbols
      1. 0, 1, a, N, #, &
  2. String
    1. Combination
      1. Barcelona, #2389
3. Logic
  1. True or false
HOW MUCH SPACE DOES IT TAKE?
1. Character
  1. 1 Byte per character
2. Byte
  1. 1 Byte
3. Short
  1. 2 Byte

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	Criado por Hiromi Kaneko mais de 8 anos atrás