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

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Where does this topic fit?

• Internet concepts– Applications– Technology– Implications

• Internet skills– Application development– Content creation– User skills

Computer components

Memory(programs and data)

CPU

Storage devices(programs and data)

Inputdevices

OutputDevices

Name three computer input devices.

Input devices

Name three computer output devices.

Output devices

Name three types of storage device.

Storage devices

Can you identify these three different storage technologies?

CPU and Memory

Misconception alert!

Students often confuse memory and storageDon’t be the one

Computer components – information flow

Memory(programs and data)

CPU

Storage devices(programs and data)

Inputdevices

OutputDevices

What is stored on your computer’s hard or flash drive right now?

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?

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

Where does the Internet fit in this picture?

Is it memory, storage, CPU, an input device or an output device?

The Internet is a very large, slow, shared storage device

A relatively slow link

Programs and data

Some online storage services

A relatively slow link

Google DriveApple iDriveAmazon Cloud DriveMicrosoft Skydrive (for now)Dropbox

Many technologies, one function -- storage

Which are obsolete?

Summary

Memory(Programs and data)

CPU

Storage devices(programs and data)

Inputdevices

OutputDevices

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