A 16-bit processor would be able to complete the operation with single instruction -RRB- Historically , 4-bit microprocessors were replaced with 8-bit , then 16-bit , then 32-bit microprocessors .

A 16-bit processor would be able to complete the operation with single instruction -RRB- Historically , 4-bit microprocessors were replaced with 8-bit , then 16-bit , then 32-bit microprocessors , then 64-bit microprocessors .
