8. (Computer application) The size of the address bus in a computer dictates the amount of memory that can be addressed by the computer. For example, a 16 -bit address bus would be able to utilize 216 bits of memory which is equivalent to approximately 0.000008GB (since 1GB =1024MB,1MB=1024KB,1KB=1024 bytes, and 1 byte =8 bits). Note: This is a bit of an oversimplification of the situation but sufficient for our purposes. a. How many memory locations can be accessed by a system with a 32 -bit address bus? Express your answer in GB. b. How many memory locations can be accessed by a system with a 64 -bit address bus? Express your answer in GB. 9. Given that the bus is only doubling in size in these examples, what is accounting for the dramatic increase in accessible memory