Computer components
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Computer components. Skills : none

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Computer components

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Computer components

Computer components

Skills: none

IT concepts: computer components (input devices, output devices, memory, storage and CPU), network application vs. stand-alone application, information flow, operating system, application program, program file vs. data file, embedded system, general purpose computer, RAM, ROM, hardware cost trend

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.


Where does this topic fit

Where does this topic fit?

  • Internet concepts

    • Applications

    • Technology

    • Implications

  • Internet skills

    • Application development

    • Content creation


Computer components1

Computer components

CPU

Input

devices

Memory

Output

Devices

Storage devices


Input devices

Input devices


Output devices

Output devices


Storage devices

Storage devices


Cpu and memory

CPU and memory


Computer components

Let’s trace the information flow in a word processing, a stand-alone application.


Power is off

Power is off

Store both data and program files

Store both the OS and application programs

Operating system

WP

Prog

DB

Prog

SS

Prog


Power on copy os to memory bootstrap

Power on – copy OS to memory (bootstrap)

Operating system

Operating system

WP

Prog

DB

Prog

SS

Prog


Os displays the login screen

OS displays the login screen

Keyboard

Display

Operating system

Operating system

WP

Prog

DB

Prog

SS

Prog


After login os displays the desktop

After login, OS displays the desktop

Display

Operating system

Operating system

WP

Prog

DB

Prog

SS

Prog


Computer components

What happens when we write, print and save a word processing document?


Copy word processing program into memory

Copy word processing program into memory

Mouse

Display

Operating system

1

WP

Prog

2

Operating system

WP

Prog

DB

Prog

SS

Prog


Wp program displays a blank document

WP program displays a blank document

Display

Operating system

WP

Prog

Operating system

WP

Prog

DB

Prog

SS

Prog


Enter and display the document

Enter and display the document

Keyboard

Mouse

Display

Operating system

WP

Prog

WP

Doc

Both programs and data

Operating system

WP

Prog

DB

Prog

SS

Prog


Print the document

Print the document

Mouse

Printer

Operating system

WP

Prog

WP

Doc

Operating system

WP

Prog

DB

Prog

SS

Prog


Save the document

Save the document

Mouse

Display

Operating system

WP

Prog

WP

Doc

Operating system

WP

Prog

DB

Prog

SS

Prog

WP

Doc


Turn power off

Turn power off

Operating system

WP

Prog

DB

Prog

SS

Prog

WP

Doc


Things with computers inside embedded

Things with computers inside (embedded)


Computer components

Special purpose computer

General purpose computer

Programs in fixed, read only memory (ROM)

Programs in volatile, random access memory (RAM)


Computer components

A few questions


Where does the internet fit in our system diagram

Where does the Internet fit in our system diagram?


Computer components

The Internet is Input and Output device


Computer components

What is the input device on the iPad tablet computer? What other input and output devices would you like to see on a tablet computer?Is the storage capacity of your computer greater or less than the memory capacity?What is the cost trend for memory, storage and CPU chips?Why would you want more memory on your next computer?Why would you want more storage on your next computer?


Computer components2

Computer components

Skills: none

IT concepts: computer components (input devices, output devices, memory, storage and CPU), network application vs. stand-alone application, information flow, operating system, application program, program file vs. data file, embedded system, general purpose computer, RAM, ROM, hardware cost trend

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.


Connectivity speed in context

Connectivity speed in context

CPU

8 GB/s

Internet

download

4 Mb/s

Memory

1 Mb/s

Internet

upload

30 plus MB/s

Storage device


Computer components

HD, Win XP desktop

HD, Win Vista laptop

SSD, Win 7 laptop

ATTO disk benchmark:

SSD speed increase


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