Info. Input, process and output

Not only in computers
1. Process shared by Humans, Info. Systems, and Computers
  1. Info. enters (input)
    1. Info. is processed in a microprocessor
      1. Info. is stored in a memory device
      2. A response is given (output)
2. In case of humans
  1. Senses recieve info. (input)
    1. Brain analyses info.
      1. Brain keeps info. in memory
      2. A response or reaction is given (output)
Dialog, communication and understanding
1. Human
  1. Analog
    1. Waves that let us hear, they vary in tone speed and volume
2. Electric devices
  1. Digital lenguaje (binary)
    1. 2 states: on and off (1 and 0) to understand instructions and process information
      1. Each 1 and 0 is called a "bit(b)"
    2. Sequences of 8 bits = Byte(B)
      1. Smallest data unit = byte
        Bigger memory/data units
        Megabyte = 2^20 bytes
        Gigabyte = 2^30 bytes
        Terabyte = 2^40 bytes
        Actual computers have usually 500 Gigabytes of hard disk memory
      2. ASCII code (representation of numbers)
        1, 2, 4, 8, 16, 32, 64, 128 = combination of bits, each one representing a number
        A 1 in a numerical slot means that number is "on", several 1's in different slots mean an addition
    3. To represent
      1. Images
        Colors assigned to codes up to 32 bits
      2. Vectors
        Graphics designed by mathematical equations formulated by binary codes
      3. Videos
        Bits ordered in form of "bitmaps"
      4. Music
        Collected in intervals stored as numeric data of up to 16 bits
    4. Unicode
      1. Character codification to represent the alphabet in various languajes
        Chinese
        Korean
        Japanese
        16 bits

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Info. Input, process and output

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	Erstellt von Pablo Vega vor mehr als 9 Jahre