they are different types of notebooks some they used them on sachool or works
we used to our necesitys and it was invented on england
they used to see if kids or people in general are sick
before they used to put the sings on radio and people hear it on radio :)
there are different tv but like the first one was like this one :v
they used to see if they are attacked from someone else and to attack
a computer can be hacked also thay used to be more big !!!!!