1. Computer components Skills: none Concepts: computer components (input devices, output devices, memory, storage and CPU), information flow between them, program files and data files, where the Internet fits, storage services, changing technology for the same function 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 – User skills

3. Computer components Memory (programs and data) CPU Storage devices (programs and data) Input devices Output Devices

4. Name three computer input devices.

5. Input devices

6. Name three computer output devices.

7. Output devices

8. Name three types of storage device.

9. Storage devices Can you identify these three different storage technologies?

10. CPU and Memory

11. Misconception alert! Students often confuse memory and storage Dont be the one

12. Computer components – information flow Memory (programs and data) CPU Storage devices (programs and data) Input devices Output Devices

13. What is stored on your computers hard or flash drive right now?

14. Data like … Our class syllabus Email messages Pictures of your dog Term papers Songs School assignments TV episodes From iTunes Jokes recipes What else is on your hard drive right now?

15. Programs like … Our class syllabus Email messages Pictures of your dog Term papers Songs School assignments TV episodes From iTunes Jokes recipes Word Excel Powerpoint Web client Image editor Music player Video player Audo editor

16. Where does the Internet fit in this picture? Is it memory, storage, CPU, an input device or an output device?

17. The Internet is a very large, slow, shared storage device A relatively slow link Programs and data

18. Some online storage services A relatively slow link Google Drive Apple iDrive Amazon Cloud Drive Microsoft Skydrive (for now) Dropbox

19. Many technologies, one function -- storage Which are obsolete?

20. Summary Memory (Programs and data) CPU Storage devices (programs and data) Input devices Output Devices

21. 1.Name the five functional components of a computer system. (Try first without looking back at the presentation). 2.Can you reproduce our diagram of a computer system, showing the direction information flows between components? 3.What are the two kinds of file we store on our computers? 4.What is one application where the program you use is stored on the Internet? 5.What is one application where the data is stored on the Internet? 6.What is the capacity of your computers memory? 7.What is the capacity of your computers storage? 8.Which would you want to have greater capacity – memory or storage? Why? 9.High capacity is desirable for a storage device. What other factors need to be considered in characterizing a storage device? 10.Can information coming from an input device like a keyboard go straight to storage or a display without passing through memory? 11.Name the input and output devices on an Apple iPad computer. 12.What is the cost trend for memory, storage and CPU chips? 13.What limits the rate of data input from a keyboard to memory? Self-study questions