bueno, sobre la pregunta de las señales digitales, el que quiera hacer caso bien y el que no también:
Me dedico al tema de la electrónica, lo he consultado en varios sitios (wikipedia no, no es seguro), lo he consultado con profesores de universidad y os aseguro que la respuesta es la del ancho de banda, el que quiera seguir pensando la otra allá cada uno, os dejo un fragmento sacado de una página dedicada al tema electrónico:
What are the advantages and limitations of digital signals?
The advantages of digital signals:
• Optical fibres can transmit digital signals (and optical fibres are cheap).
• Digital signals can be compressed so more channels can be transmitted along the same fibre
• The electronic circuitry for digital electronics is cheap
• It’s easy to combine several types of information on once channel (e.g. video and audio) by multiplexing. Video phones would be impossible with analogue systems as there wouldn't be enough channels available to send all the information for eveyone's phonecalls.
• Digital signals are more secure – it is easier to encrypt digital signals making internet shopping less risky for examole.
• Can connect several different users to the same link – such as video conferencing.
• Digital signals suffer less from noise because any errors can be detected and corrected using regnerators. Therefore the signal you receive is more easily decoded and, on television, you will see a clearer picture or hear a clearer sound, for example.
• The electronics can make corrections to the signal if it has been corrupted during transmission which means that the image or sound is complete.
The disadvantages of digital signals:
• Digital signals need more ‘bandwidth to transmit the same information
• The transmitter and receiver have to synchronise very carefully so that the information makes sense.
el que quiera seguir engañándose a si mismo, allá él, pero los que queréis una opinión con algo de criterio sacado del ámbito Wikipedia o MAD, ahí tenéis uno, sacad vuestras propias conclusiones.
PD: yo en el
examen puse la del ancho de banda, y no gano nada intentando llevarme a la gente a mi terreno, pero me he molestado en buscarla para que si vuelve a salir, no se vuelva a fallar.
PD2: si alguien necesita traducción que lo comente y la pongo
