Bit, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte, Petabyte, Exabyte, Zettabyte, Yottabyte

1 bit
1 Byte = 8 bits 
Nibble: 4 bits                     
1 KiloByte (KB) = 1,000 Bytes o 10 a la tercera potencia bytes
1 MegaByte (MB) = 1,000 KB, 1,000,000 bytes o 10 a la sexta potencia bytes
1 GigaByte (GB) = 1,000 MB, 1,000,000,000 bytes o 10 a la novena potencia bytes
1 TeraByte (TB) = 1,000 GB, 1,000,000,000,000 bytes o 10 a la doceava potencia
                           bytes
1 PetaByte (PB) = 1,000 TB (TeraBytes), 1,000,000,000,000,000 bytes o 10 a la 
                           doceava potencia bytes
1 ExaByte (EB) = 1,000 PB (PetaBytes), 1,000,000,000,000,000,000 bytes
                          o 10 a la quinceava potencia bytes
1 ZettaByte (ZB) = 1,000 EB (ExaBytes), 1,000,000,000,000,000,000,000 bytes
                           o 10 a la decimo-octava potencia bytes
1 YottaByte (YB) = 1,000 ZB (ZettaBytes), 1,000,000,000,000,000,000,000,000 byes
                           o 10 a la vigesima potencia bytes

Y adicionalmente:

1 bit
1 Nibble = 4 bits
1 Byte = 2 Nibles = 8 bits
1 Word = 2 Bytes = 16 bits
1 Long Word = 4 Bytes = 32 bits