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These are some of the slides from presentations we covered this term.

CIS 275 f2010 greatest hits. These are some of the slides from presentations we covered this term. I’ve modified some of them a little and added a couple organzing slides. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. IT literacy.

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These are some of the slides from presentations we covered this term.

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  1. CIS 275 f2010 greatest hits These are some of the slides from presentations we covered this term. I’ve modified some of them a little and added a couple organzing slides. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. IT literacy What skillsand conceptsare needed for success as a student and after graduation as a professional and a citizen? John Kemeney Thomas Kurtz

  3. Internet concepts Technology Applications Internetconcepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Implications

  4. Skills Content creation Application development Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills User skills

  5. Applications Video Web search Phone calls email Music Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Chat Shopping

  6. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Network-based applications The Internet (programs and data) A relatively slow link

  7. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Network vs. desktop applications Internet Desktop or stand-alone Network based

  8. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Web data flow Server Client Request Web client program Web server program Page Memory Memory Requested page Requested page The Internet Display Storage

  9. Retrieving a Web application program request Server Client Web page plus WP program Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills

  10. I would like to open a connection GET <file location> Display response Close connection OK Send page or error message OK An HTTP conversation Client Server Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills

  11. Information technologies Processing and memory Communication Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Storage

  12. Technology improvement and technology shifts Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills

  13. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills The bottom line

  14. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Computer components CPU Input devices Memory Output Devices Storage devices (programs and data)

  15. The Internet is a very large, slow storage device Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills The Internet (programs and data) A relatively slow link

  16. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Sensors

  17. Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills Summary 100110 101010 100101 011101

  18. Connectivity from and within a LAN Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills How does the LAN connect to the Internet? The Internet LAN How are the computers connected inside the LAN?

  19. Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills Connectivity

  20. Communication links Computer 2 Computer 1 Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills

  21. Units of measure for data transmission rate Transmission rate = amount of data per unit of time Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills

  22. The route from one host to another Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills

  23. Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills Function of each layer

  24. TCP/IP hierarchy -- protocols Application (many) Physical (LAN, WAN links) Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills Transport (UDP, TCP) Internet (IP) Data link (Ethernet, WiFi)

  25. TCP/IP hierarchy -- responsibilities Physical (LAN, WAN links) Application (do useful work) Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills Transport (app to app communication) Internet (net to net communication) Data link (LAN communication)

  26. IP addresses and domain names Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills 65.55.12.249  = www.microsoft.com 65.55.12.249 www.microsoft.com

  27. Implications for … Society Individuals Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Organizations

  28. Application development platforms • Twitter • Blogger • Google docs • Google spreadsheet • Wikispaces wiki • Zoho creator database • Collaboration • Survey gizmo • Listserver • Subscription (RSS and email) • HTML • Publish Web pages using FTP Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (text) • User skills

  29. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills A two column interface Post title and date Post body Additional information Footer

  30. Application development Personal computer Batch processing and time sharing Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (text) • User skills Internet platform

  31. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (text) • User skills Content creation data types Text Image Audio Video

  32. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Data types

  33. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills All data is binary 010101011100101010101010101010111010101010101010101010101010100101010101000010110101010101010010101101101010101010110010110010101010100101110101001010010101010101010001001010101011010011010010101010100101101001011100101010101001010101000101010101010101010010101001010101001001001001010101001000101010101110100101001010101010010101010101001010100100101010010101001001010101001010100101010100101010101001010101011110101011100001111011

  34. Numeric prefixes – exact and close enough Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills

  35. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills Data + a code → information 0100110001100001011100100111001001111001

  36. 1-bit code 2-bit code 3-bit code 4-bit code A 00 B 01 C 10 D 11 A 0000 B 0001 C 0010 D 0011 E 0100 F 0101 G 0110 H 0111 I 1000 J 1001 K 1010 L 1011 M 1100 N 1101 O 1110 P 1111 A 0 B 1 A 000 B 001 C 010 D 011 E 100 F 101 G 110 H 111 More bits means more unique codes

  37. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation • User skills All data types are compressible Image Numeric Audio Video Text

  38. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (text) • User skills Internet writing is important When hiring, Jason Fried looks for: • A positive attitude • A well rounded, flexible person • A quick learner • Trustworthiness – an independent worker • A good writer Probably the most important thing and probably one of the surprises is you have to work with people who are good writers. All five criteria (2m 42sec) Writing (34 sec)

  39. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (text) • User skills Three tips • Collaborative writing • Conversational writing • Writing short documents

  40. Image processing work flow Capture Edit Compress Distribute Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (image) • User skills

  41. Image characteristics Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (image) • User skills

  42. 12 colors, 12 codes Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (image) • User skills

  43. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (image) • User skills 96% reduction

  44. RGB Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (image) • User skills

  45. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (audio) • User skills Recording and playing sound Computer 10010110 (150) 11001001 (201) 11000111 (199) … Analog to digital converter Computer 10010110 (150) 11001001 (201) 11000111 (199) … Digital to analog converter

  46. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (audio) • User skills Which clock is digital? Analog? http://som.csudh.edu/fac/lpress/presentations/clocks/clocks.html

  47. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (audio) • User skills Sampling an analog signal

  48. Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (audio) • User skills Recording tradeoffs Increase sample rate → quality ↑ file size ↑ Increase sample size → quality ↑ file size ↑

  49. User skills Internet concepts • Applications • Technology • Implications Internet skills • Application development • Content creation (audio) • User skills

  50. The parts of a domain name Internet concepts • Applications • Technology (communication) • Implications Internet skills • Application development • Content creation • User skills • The particular host is called som • The organization that owns the name it is csudh • This host is at an educational organization som.csudh.edu

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