How can we compare the logical address with the contents of the limit register ?

Question

when the limit register contains the maximum physical address of the process so then how can we compare directly the logical address with the limit register contents ?

Answer 1

here the comparison is only to make sure that the address is less than that of the limit register any of the digital comparator can be used for the same.  And it is done so that we cannot access the address space of any other process.