Construct a ROM memory with the size 128 x 8 ROM, knowing that in the lab, you only have ROM chips with the size of 32 x 8 chips with an enable input. You can construct the memory with the given chips and a decoder. [Hint: you can do this by dividing the address lines into two section; one section to address the chip (using chip Enable) and the other to address words within the enabled chip) a) [1 mark] How many chips are needed to construct the required memory? b) [1 mark] How many address lines are needed for the required memory? c) [1 mark] How many address lines in one chip?

d) [1 mark] What is the size of the decoder used? (number of inputs and outputs) e) [1 marks] Draw a block diagram showing the organization of the constructed memory. Your diagram should show 7 input address bits and 8 output data bits.