I wanted to buy a CD player, but was completely perplexed by one model's promotional sign. So I called the salesclerk over and asked, "What does 'hybrid pulse D/A converter' mean?"  

He said, "That means that this machine will read the digital information that is encoded on CDs and convert it into an audio signal."  

"In other words," I said, "this CD player plays CDs."  

"Exactly."