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Ch.3 Number and Character Coding System - Coggle Diagram

- - - - morden computer usually have a word size of 16, 32 or 64 bits
      - word size is measured in bits
      - natural unit of data used by a computer
    - - consider of 8 bit
      - a data unit used in computers
    - - only represent one of two distance values
      - basic unit for stringing data
      - single binary digit
  - - - leftmost bits, known as sign bit, is used to specify the sign of a binary integer
      - the sign bit:
        
        0: positive integer
        
        1: negative integer
        
        used in computer system
    - - widely used in computers to represent binary integers
      - all integres have unique representation
      - exactly the same as that of the original value
- - - - ASCII
      - EBCDIC
  - - - Big 5 code: traditional Chinese
      - GB code: simplified Chinese
      - Unicode system: use two bytes to represent one Chinese character