Four bits in a nibble.

Eight bits in a byte.

1024 bytes in a kilo byte.

1024 kilo bytes in a mega byte.

1024 mega bytes in a giga byte.

1024 giga bytes in a tera byte.

1024 tera bytes in a peta byte.

1024 peta bytes in a exa byte.

1024 exa bytes in a zetta byte.

1024 zetta bytes in a yotta byte.

I think that about sums up what I wanted to write.