Data plus a code → information Skills: none IT concepts: text code This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike.

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Presentation transcript:

Data plus a code → information Skills: none IT concepts: text code This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.

Where does this topic fit? Internet concepts –Applications –Technology –Implications Internet skills –Application development –Content creation

40 bits of data Do you see a pattern or is it random? Random bits convey no information.

bytes of data Do you see a pattern?

bytes of data These bytes are the same – highly unlikely if these were random bits.

A code

L a r r y Larry Data plus a code → information

Random bits convey no information. The amount of information in 1,000,000,000,000,000 random bits is 0. Data must be organized to convey information. A code allows a person (or a computer) to find that organization.

Codes must be standardized if we are to exchange information. We used a portion of the ISO code in this example. It is the default code in all popular Web browsers.

A few questions

What would happen if a program tried to display a page of text that was created by a program using a different code than expected?

Height (inches)70data type? Weight (pounds)170data type? Social security number data type? The symbols 0…9 may be used in numeric and text data. Which of these is numeric and which is text?

Data plus a code → information Skills: none IT concepts: text code This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License.