please tell me the difference between logical memory an virtual memory in simple words

Question

e.mccormick · Answer

Logical memory is where a program thinks its data is.  For example, a logical address can point at the original place in memory where information is stored, a virtual memory space, or anew memory space things have been moved to.  The logical memory mapping allows the program to think about one address space while the computer really stores things in one of many address spaces.

Virtual memory is using hard drive space to pretend you have more memory than you really do.  However, programs do not know how to use the hard drive as memory.  So a logical memory map is used by the operating system to point programs to the virtual memory without the programs realizing they are accessing the hard drive as memory.