What are the advantages of semicondutors on mp3/ipod?

Question

can you explain what's the use of the semiconductors based on its advantage? i mean example: if you say semiconductors can help the mp3 be portable..please explain how will it help the mp3 be portable..thanks!

Answer 1

If you didn't have semiconductors in an Ipod, you would have to use a different technology - like vacuum tubes.  These require more power, so you would need more and bigger batteries.  Your Ipod would probably end up the size of a small suitcase, and weigh 30 pounds or more.

Ask your parents (or your grandparents) what a "portable radio" was like in the days before transistors.  If they could afford one at all, they were bulky and heavy.  And that was just a radio!  It couldn't play music (except what was being broadcast), much less video!