(a) Briefly, describe the following terms with respect to software design.

(i) Structured/Modular Programming

(ii) Top-Down Design & Bottom-up implementation

(iii) Flow Chart (iv) Design Team

(iv) Data Flow Diagram

(v) Software Documentation

(b) Design and draw the circuit diagram for an address decoder that provides an active low chip select for each of the two address ranges $C400-$C7FF and $C800-$CFFF. Show your working for the fixed address part leading to the circuit design.

(c) With the aid of a diagram, describe the sequence of events which take place in a microcomputer system when a DMA transfer is made between memory and input/output using a DMA Controller.