Information Coding Schemes

Information Coding Schemes ~

The combination of 0 and 1 that represent characters are defines by pattern called a Coding scheme.

Popular Coding scheme :

• ASCI/Extended ASCI (America Standard Code for Information Interchange)

- Use 8 bits to represent a character
- Can represent 256 character (2 to the power of 8 = 256)
- Used on PC and server

• EBCDIC (Extended Binary Coded Decimal Interchange Code)

- Use 8 bits to represent a character
- Can represent 256 character (2 to the power of 8 = 256)
- Used on IBM mainframe and high end servers

• Unicode (Uniform code capable of representing all world's languages)

- Used 16 bits to represent a character
- Can represent >65000 characters (2 to the power of 16 = 65000)
- Implemented in several OS (Windows, Mac OS, Linux)

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