K ces Exhibit 4 13 Work Breakdown Structure and Activities for the Cell Phone Design Project ACTIVITY IDENTIFICATION MAJOR SUBPROJECTS ACTIVITIES Product Specifications P Product design D Supplier specifications S Market research Overall product specifications Hardware Software Subcontracting V Product integration I Hardware Software Battery Display Camera Outer cover Hardware User interface Software coding Prototype testing Minimum number of weeks Suppliers selection Contract negotiation P1 P2 P3 P4 S1 S2 D1 D2 D3 D4 I1 12 13 14 V1 V2 a Determine the minimum number of weeks for completing the project DEPENDENCY 1 P1 P2 P3 P4 P4 S1 S1 S1 D1 D2 D3 D4 D2 12 11 13 S1 S2 14 V1 DURATION WEEKS 3 5 5 5 5 7 3 5 W5 SSSN S 2 5 5 5 10