Board-dependent issues

The most important issues for selecting the optimal test strategy are defect levels, where defects are introduced in the manufacturing process, test/inspec-tion effectiveness, and board-dependent issues, such as complexity, production volumes, and electrical and visual access. 

As an example, consider a finished goods item produced by some firm, let us say a cell phone. To the producing firm, the cell phone itself is an independenf-demand item. Its component parts—such as the circuit board, the keypad, the plastic housing, the battery, etc.,— are dependent-demand items. The demand for these items is driven by the production schedule for the cell phones, which is solely under the control of the company that produces the phones. The company s management chooses the production plan in response to projected consumer demand for these phones. Thus, inventory management for dependent-demand items is largely an issue of ensuring that component parts are available in sufficient quantities to execute the production plan. 

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