Yes
Yes all bluray drives will play cds.
Yes. Some Blu-Ray players can even play photo CDs and some can even display data on SD cardsAll players can, but not the very early ones (the first ones were manufactured in 2006)All Blu-Ray players can play DVDs and CDs
Yes, BluRay DVD players also play non Blu-Ray DVDs with no problem.
Yes. DVD players can play music CDs. Blu-Ray players can also play DVDs and music CDs as well
DVD players and drives cannot handle Bluray discs, whether recording to them or reading from them. Bluray players and drives on the other hand can use DVD discs as well as Bluray discs.
most of the newer CD players can play burnt cds
Yes. DVD players can play music CDs. Blu-ray Players can also play DVDs and music CDs as well
Yes
DVD players cannot play Bluray discs. The lasers and the data storage are different so no data can be read from a Bluray disc in a DVD drive. That is the case whether or not there is any up-scaling available in the player. Bluray players on the other hand are quite happy to play DVDs as well as Bluray discs.
people who have bluray players
Unlike DVDs, Bluray discs and most games, CDs are not region coded. CDs from any region will play in any player.
The laser that is in most DVD players can also read CDs, which is why most DVD players can play audio CDs. The laser in straight CD players cannot read DVDs.