Have a clean hands.
Do
Playing and running around the computer.
Don't
Wait when the computer is slow.
Do
sit too close to the monitor
Don't
Sit on your chair with feet on floor
Do
Press the key gently.
Do
slam fists on the keybord.
Don't
Listen when the teacher is teaching.
Do
Have a dirty hands.
Don't
Have a messy desk.
Don't
Forget to charge your computer.
Don't
Clean your computer with dry clothes.
Do
Cover the the computer when it is not in use.
Do
Turning off the computer directly from the switch
Don't