Engineering
Engineering, 04.03.2021 20:10, imthebestatcod

Let x[n] represent the number of new cell phones ordered externally (from outside the factory) on day n at the ACME Phone Manufacturing Com- pany and let q[n] represent the total number of or- ders (internal and extermal) received on day n. . It takes 2 days to manufacture a cell phone from the day the internal or external) order is received, and let w[n] be the number of completed phones on day n. Before shipping, 10% of the completed phones are held for one more day of extensive testing (the remaining phones are available for shipping). Of the tested phones, 95% pass the test and are available for shipping at the end of the day of testing, but the other 5% that fail the test are discarded for recy- cling. An internal order is made to replace the failed phones in the manufacturing process. Let y[n] be the total number of phones available to ship on day n. Specify a flow diagram and a difference equation in standard form) that describe together the number of phones available to ship as a function of the number of external orders received.

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