The ‘OR’ gate. This gate creates a signal at the output when either one ‘OR’ the other inputs has a signal. In the electronic world this means if there is a positive five (+5) volts at either one or the other inputs of the ‘OR’ gate there will be a positive five (+5) volts at the output. In digital speak a one (1) at either input, or both of the ‘OR’ gate will equal a one (1) at the output. zero (0) volts at both or all inputs will result in a zero (0) output. In Minecraft if you have a Redstone signal at either input (torch, lever, pressure plate etc.) it will result in a Redstone signal at the output. The picture below shows an active signal on the right side and the light on at the output

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