The telecomunication

After, we comunicated in the past with letters and these always arrived late and sometimes never arrived.
One advance was the telephone in our houses. Later we invented the mobilephones. All the people comunicate very easy between us.

Also the television was a big invention. First, the television was black and white and it only had one channel. Now there are a lot of television companies like: Digital plus, Gol tv, Imagenio, but all the televisions have TDT.

The computer was an invention of century XIX. The first computer was very big and it didn't have any memory. Now the computers are the opposite, they have got a lot of memory ,aplications and are very small. 

Now it is very normal to find computers and mobilphones with high tecnology in our homes.