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Two car garages have a common gate which...

Two car garages have a common gate which needs to open automatically when a car enters either of the garages or cars enter both. Devise a circuit that resembles this situation using diodes for the situation .

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A car enters in the gate, any one or both are opened.
The device is shown.

So, OR gate gives the desired output.
`{:(ul(A" "B" "C)),(0" "0" "0),(0" "1" "1),(1" "0" "1),(ul(1" "1" "0)):}`
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