In a 32-bit program an address is a 32-bit value. In a 64-bit program an address is a 64-bit value (although only the low 48 bits are used). In a linear address space, the possible address space is 4GB. One note is that many hardware items are memory mapped to addresses.
However, this will not totally solve the Fedâs problem. Even when it was paying the banks 0.25% interest on reserves, the effective federal funds rate (the rate at which reserves at the Fed were actually being traded) was below 0.25%. This is why the Fed adopted a range for the federal funds rate of 0-0.25%.
the federal reserve left its target range for the fed funds rate unchanged at 0 to 0 25 percent on september 17th 2015 showing concerns that recent global economic and financial developments may restrain economic activity and put further downward pressure on inflation in the near termed rate hike still possible this year an initial increase in the federal funds rate later this year would still be appropriate depending on economic data federal reserve chair janet yellen said in a speech at the university of massachusetts published on 2015 09 24