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Codecademy Code Foundations

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ASCII in block chain

  • ASCII is an acronym for the American Standard Code for Information Interchange
  • ASCII is used to represent English characters as numbers with each letter assigned a number from 0 to 127 (= 128 possibilities).
  • Computers converts text to numbers because it makes it possible to transfer data from one computer to another.
  • The standard ASCII character set uses 7 bits (27 = 128 possibilities) for each character (English).
  • There are other character sets for example ISO8859 or Unicode using 8 or more bits to convert non-English characters and other symbols to numbers.


For example, the word "Cat" converted into ASCII is:

        67 , 97 , 116  (decimal)

ASCII Encoding and Decoding


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