Computer Science · Oct / Nov 2018 · Paper 12 · Question 10
2210
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A system uses pH sensors and a microprocessor to help monitor pollution in a river. The pH of the water should be between 6 and 8. The system outputs an alert if the pH of the water is not in this range. Explain how the system uses the pH sensors and the microprocessor to help monitor the pollution. [5]
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