Medidas de información

BIT   binary digit (0,1)
8 BITS -1 BYTE
2 ^10 BYTES - 1024 BYTES = 1 KB
2^10 KB - 1024 KB = 1 MB
2^10 MB - 1024 MB = 1 GB
2^10 GB - 1024 GB = 1 TB
2^10 TB - 1024 GB = 1 PB

20Mb - 4.7 GBDVD     t =
             4.7*1024*8Mb/ 20Mb/s = 1925.125 = 32' 5''