The Noname Computer Company builds a computer designated model ICU2. It imports the motherboard of the computer from Taiwan, but the company inserts the sockets for the chips and boards in its plant in Lubbock, Texas. Each computer requires a total of ninety 64K dynamic random access memory (DRAM) chips.

Noname sells the computers with three add-in boards and two disk drives. The company purchases both the DRAM chips and the disk drives from an outside supplier.

The product structure diagram for the ICU2 computer is given in Figure 8–6.

Suppose that the forecasted demands for the computer for weeks 6 to 11 are 220, 165, 180, 120, 75,