Base $+$ Bound

One process uses RAM at a time

$$ MMU

$$ Time Sharing

$$ Segmentation

$$ Paging

$$ Base Register

$$ Transparency

Transparency

Both the virtual and the physical memory slots are the same in size

Add per$-$process starting location to virtual address to obtain physical address

Several base $+$ bound pairs per process

Dynamic approach that verifies address is in valid range

Maps memory access using virtual addresses to system RAM

Process is unaware of sharing