What is the time complexity of copying a bitset?

Question

Algorithms

Suppose we have two bitsets of size N. I want to transfer all values ​​from one bitset to another. What will be the time complexity of this operation?

Answer 1

This is very language, processor, and memory dependent. If we consider a classical Turing machine, then copying one bit takes the time of reading + writing + shifting * shifting addresses => k*N.
If we consider memory cells as m bits in one, then k*N÷m=p*N.
If we copy bits in the language through a shift, then the first option is even slower.