<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> In computing, a nibble (occasionally nybble or nyble to match the spelling of byte) is a four - bit aggregation, or half an octet . It is also known as half - byte or tetrade . In a networking or telecommunication context, the nibble is often called a semi-octet, quadbit, or quartet . A nibble has sixteen (2) possible values . A nibble can be represented by a single hexadecimal digit and called a hex digit . </P> <P> A full byte (octet) is represented by two hexadecimal digits; therefore, it is common to display a byte of information as two nibbles . Sometimes the set of all 256 byte values is represented as a 16 × 16 table, which gives easily readable hexadecimal codes for each value . </P>

What is a group of 4 bits called