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-When multiple inputs control a single output, it may help to organize all of the possible combinations into a form known as a "truth table".  In a truth table, all possible combinations are summarized in a table of inputs, and the result is identified in an output column.
-When creating a truth table for binary conditions (like and on/off switch), it helps to follow a pattern.  This pattern is also common in binary codes.
-Inputs Output
-Switch Positions Load Condition
-A B C Result
-0 0 ?
-0 1 ?
-1 0 ?
-1 1 ?
-0 0 ?
-0 1 ?
-1 0 ?
-1 1 ?
-Can you find any patterns in the input columns of this truth table?
-Test each of the eight input conditions, and record the output result.
-Can you find any patterns in the output? Did you discover anything by using this table that you did not notice when you first explored the circuit boxes?
-[[Next|Logical_Terms]]

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