Plural

(adj.) of many, of more than one 
(adj.) grammatical number category referring to two or more items or units
(n.) form of a word that designates more than one referent (gram.)
(n.) the form of a word that is used to denote more than one

Datum

The singular form of data
For example, one datum
It is rarely used, and data, its plural form, is commonly used for both singular and plural

A Bit

The computer (or an Intel computer, or a computer that runs on an Intel microprocessor)  

(B-1) Uses the binary system to represent its information

Example of (B-1)

A piece of information in the computer is called a datum
(B-2) The plural is data

Example of (B-2)

Sometimes, the word data is used for both singular and plural

The computer represents data

Using [...]