12-april-2016

tecnology devices about:

cell phone:

-the first problem that we found, is the fact that only 44 users could communicate simuntaneosly at the same time just in one city, this happened because the sistem didnt cover the demand, the service was reserved only to a few privileged.

- this products needed a datbase with information about where is it, where is going to and who was using it. this datebase had to be quickly but in that it was not fast enough.

- also to be able to transmit and recive all the information, the cell phone had to incude a frecuency synthetizer, a piece that was to expensive and to heavy.

TV: 

- at the begining the First  emissions were done by chanels that did those emissions in a irregular schedule.

- this artefact was too expensive and very little because it needed news tecnologys that were not easy to build an make it work was more dificulta that this.

- the operation of this stoped in the second world war and start when it ended.

- the people who worked developing this product though that the only way of did emissions was marina it at the moment that They started filming, but then They figure out that recorded and transmit to the public later was possible.

radio:

- the first emission done on the history was not music or voices, it was a kind of buzzing that use the morse code, this code is a system that represents numbers and letters by control signals from a intermittent.

- the person who manage to create the fist emissions was Marconi but years earlier tesla patented this idea by his name, so with this event the story is known as tesla the inventor of radiwaves and the radio.