So I was watching this (https://www.youtube.com/watch?v=WkIR23emsWY) by technology connections and I just realized that I have no idea how CDs work. The video is about how some CD players can read audio of a CD where the data is just copied directly onto a CD with a computer whereas older players only had hardware compatible with CDs formatted as …. digital audio?
I was trying to figure it out on wikipedia, how is a commercial CD you’d buy in a store different from a CD with files copies onto it?
I remember my dad used to use a burning tool to make images. Why are they called images? How is an image different from a CD?
Why are some CDs readable and writable but some aren’t?
In: Technology
The original music CDs were basically like vinyl records, but instead of a record player with a needle it is a CD player with a laser.
Record players are really dumb. You put the needle in the groove and the record spins playing everything in the groove then lifting up at the end to stop it. To skip songs you had to look for the empty grooves. They need that exact format to work.
CD players weren’t fancy computers. They had very basic instructions to read the info that was directly translated into analog audio.
Computers can read info from different places on the disc and could decide complicated information and convert it to whatever needed to be played.
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