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Computer components
Skills: noneConcepts: 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.
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Where does this topic fit?
• Internet concepts– Applications– Technology– Implications
• Internet skills– Application development– Content creation– User skills
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Computer components
Memory(programs and data)
CPU
Storage devices(programs and data)
Inputdevices
OutputDevices
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Name three computer input devices.
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Input devices
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Name three computer output devices.
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Output devices
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Name three types of storage device.
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Storage devices
Can you identify these three different storage technologies?
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CPU and Memory
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Misconception alert!
Students often confuse memory and storageDon’t be the one
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Computer components – information flow
Memory(programs and data)
CPU
Storage devices(programs and data)
Inputdevices
OutputDevices
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What is stored on your computer’s hard or flash drive right now?
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Data like …
Our classsyllabus
Emailmessages
Pictures of your dog
Term papers Songs
Schoolassignments
TV episodesFrom iTunes Jokes
recipes
What else is on your hard drive right now?
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Programs like …
Our classsyllabus
Emailmessages
Pictures of your dog
Term papers Songs
Schoolassignments
TV episodesFrom iTunes Jokes
recipes
Word
Excel
Powerpoint
Web client
Imageeditor
Music player
Videoplayer
Audoeditor
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Where does the Internet fit in this picture?
Is it memory, storage, CPU, an input device or an output device?
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The Internet is a very large, slow, shared storage device
A relatively slow link
Programs and data
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Some online storage services
A relatively slow link
Google DriveApple iDriveAmazon Cloud DriveMicrosoft Skydrive (for now)Dropbox
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Many technologies, one function -- storage
Which are obsolete?
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Summary
Memory(Programs and data)
CPU
Storage devices(programs and data)
Inputdevices
OutputDevices
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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 computer’s memory?7. What is the capacity of your computer’s 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