Question

length of the register is called

Answer 1

A register must be large enough to hold an instruction - for example, in a 64-bit computer, a register must be 64 bits in length.

Answer 2

The length of the register is called as word size.

Explanation:

• In computing environment, word size can be referred as the maximum number of bits from which the CPU can process over a time.  

• A word can be defined as a fixed size of piece of data which can be dictated by the hardware architecture processor.  

• The size of a register can be entirely based on the kind of register and its purpose. However, a general purpose register might use maximum word size capacity of the processor.