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%.
Banks whose reserves dip below the reserve requirement set by the Federal Reserve's board of governors use that money to correct their shortage. The board of directors of each reserve bank sets the discount rate every 14 days. It's considered the last resort for banks, which usually borrow from each other. How it's used: The Fed uses the discount rate to control the supply of available funds, which in turn influences inflation and overall interest rates. The more money available, the more likely inflation will occur. Raising the rate makes it more expensive to borrow from the Fed.