1) Which numbers does the computer understand? a) 0 and 1 b) 2 and 1 c) 0 and 2 2) What does the number 0 detect? a) Turn the circuit off b) Turn the circuit on 3) What does the number 1 emphasise? a) Turn the circuit off b) Turn the circuit on 4) What language does the computer understand? a) Binary b) English c) Chinese

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