Recently I get caught into the 4,7 GB DVD-trap. A lot of (all?) memory producers (USB stick, DVD, HDD, …) say e.g. DVD 4,7 GB! And so a lot of (power) users think: 4,7 GB!
But this is not the truth!
GiB (Gibibyte) 1.073.741.824 Byte
GB (Gigabyte) 1.000.000.000 Byte
Since my first steps (> 15 years ago) in programming software (C/C++) I was aware of the 1024 thing… In IT everybody knows about it and it was clear if someone said: 1 KB (=1024 Byte). Everybody was knowing it!!
But then (I assume some smart mathematic or ISO freaks) said: Kilo = 1000 (which is true of course!!) but in computer’s world (made of a lot of bits –> 2 ^ x) it is a difference!
And this "confusion" is utilized by a lot of manufactures which say: DVD 4,7 GB!