Computer Science · Oct / Nov 2018 · Paper 12 · Question 3

A greenhouse uses a system to monitor the conditions that plants need to grow. The inputs to the system are: Input Binary value Condition W 1 Window is open 0 Window is closed T 1 Temperature >=26 °C 0 Temperature <26 °C H 1 Humidity >=50% 0 Humidity <50% The system will sound an alarm when certain conditions are detected. Alarm (X) will sound (=1) when: window is closed and temperature >=26 °C or temperature <26 °C and humidity >=50% Draw a logic circuit to represent the system. W T X H [5]

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