\#4 Suppose that a 8MX32 main memory is built using 128KX8RAM chips and memory is word addressable. a) How many RAM chips are necessary? b) Accessing one full word, how many chip would be involved c) Number of address bits for each RAM chip? d) Number of Banks? e) How many address bits to needed for all memory? f) How many lines must be decoded for the chip select input? Specify size of the decoder