How many bytes make up a word?

Answer

On a 16 bit i80386 machine a nibble represents 4 bits or half of a byte.

A byte represents 8 bits.

A word represents 16 bits or 2 bytes.

On 32 bit machines the DWORD(double word) is available and represents 32 bits or 4 bytes.

On the newer 64 bit machines a QWORD represents 64 bits or 8 bytes of data. QWORD stands for QuadWord or Quadruple Word.

On modern computers, a single character consumes 2 bytes of data in memory. So the word cat would consume 6 bytes. These are known as DBCS or double-byte character sets.