The ABC Company builds a computer model called ICU2. The product structure diagram of the ICU2 model is shown in the figure below. Suppose that the forecasted demands of the computer over weeks 6 to 11 are 220, 165, 180, 120, 75, 300. The starting inventory of assembled computers in week 6 will be 75, and the production managers anticipated returns of 30 in week 8 and 10 in week 10.

ICU2 computer (End Item)

1) Disk Drives (2) lead time= 1 week

2) Mother Board (!) Lead time =3 weeks

a) Add in boards(3) Lead time = 1 week

b)DRAM chip (90) Lead time =2 weeks

(a) Determine the net demand of the computers over the 6 months.

(b) Determine the planned order release for the motherboards assuming a lot-for-lot scheduling rule. Estimate its total ordering and holding. Assume the holding cost is $0.5/unit/month and the ordering cost is $100 per order.

(c) Determine the planned order release for the motherboards assuming a EOQ scheduling rule. Estimate its total ordering and holding using the same parameters in part (b).

(d) Determine the planned order release for the motherboards assuming a Silver-Meal scheduling rule. Estimate its total ordering and holding using the same parameters in part (b).