Exhibit $4\mathrm{.}13$: Work Breakdown Structure and Activities for the Cell Phone Design Project

MAJOR SUBPROJECTS$/$ACTIVITIES ACTIVITY IDENTIFICATION DEPENDENCY DURATION $($WEEKS$)$

Product Specifications $($P$)$

Market research P$14$

Overall product specifications P$2$ P$13$

Hardware P$3$ P$25$

Software P$4$ P$35$

Supplier specifications $($S$)$

Hardware S$1$ P$45$

Software S$2$ P$46$

Product design $($D$)$

Battery D$1$ S$11$

Display D$2$ S$12$

Camera D$3$ S$11$

Outer cover D$4$ D$1,$ D$2,$ D$34$

Product integration $($I$)$

Hardware I$1$ D$43$

User interface I$2$ D$24$

Software coding I$3$ I$24$

Prototype testing I$4$ I$1,$ I$34$

Subcontracting $($V$)$

Suppliers selection V$1$ S$1,$S$210$

Contract negotiation V$2$ I$4,$ V$13$

a$.$ Calculate the start and finish times for each activity. $($Leave no cells blank $-$ be certain to enter $"0"$ wherever required.$)$

b$.$ Determine the minimum number of weeks for completing the project.

c$.$ Find the activities that are on the critical path for completing the project in the shortest time.