1. 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.

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

3. 40 bits of data 0100110001100001011100100111001001111001 Do you see a pattern or is it random? Random bits convey no information.

4. 010011000110000101110010 01111001 0100110001100001011100100111001001111001 5 bytes of data Do you see a pattern?

5. 010011000110000101110010 01111001 0100110001100001011100100111001001111001 5 bytes of data These bytes are the same – highly unlikely if these were random bits.

6. A code

7. L01001100 a01100001 r01110010 r y01111001 Larry 0100110001100001011100100111001001111001 Data plus a code → information

8. 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.

9. Codes must be standardized if we are to exchange information. We used a portion of the ISO-8859-1 code in this example. It is the default code in all popular Web browsers.

10. A few questions

11. 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?

12. Height (inches)70data type? Weight (pounds)170data type? Social security number544678793data type? The symbols 0…9 may be used in numeric and text data. Which of these is numeric and which is text?

13. 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.