A bit is the basic unit of computer storage. It can contain one of two values, zero or one.

A byte is 8 bits, and on most computers it is the smallest convenient chunk of storage. 

• For example, most computers don’t have an instruction to move a bit but do have one to move a byte

A word is generally made up of one or more bytes. 

• For example, a computer may have instructions to move 64-bit (8-byte) words.

• 1024 Bytes

• (1024)^2 Bytes
• Usually round off as 1 million bytes

• (1024)^3 Bytes
• Usually round off as 1 billion bytes