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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

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

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

slide21

Special purpose computer

General purpose computer

Programs in fixed, read only memory (ROM)

Programs in volatile, random access memory (RAM)

slide25

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

slide28

HD, Win XP desktop

HD, Win Vista laptop

SSD, Win 7 laptop

ATTO disk benchmark:

SSD speed increase

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