2.33 [10/10/10] Consider a desktop system with a processor connected to a 2 GB DRAM with error-correcting code (ECC). Assume that there is only one memory channel of width 72 bits (64 bits for data and 8 bits for ECC). a. [10] How many DRAM chips are on the DIMM if i Gb DRAM chips are used, and how many data 1/Os must each DRAM have if only one DRAM connects to each DIMM data pin? b. [10]