Computer

1. Input

2. Mouse

2.1. Controls cursor

3. Keyboard

3.1. Can be used for controlling computer

3.2. Used to write on computer

4. Touchpad

5. Output

6. Printer

6.1. Use to print papers when unable to write

6.1.1. Materials

6.1.2. Personel

6.1.3. Services

6.1.4. Duration

7. Speakers

7.1. Can be used for the hearing impaired to amplify sound

7.1.1. KPI's