I'd relax and let poor Schema work, but he did post that he believed the logic was 100%
Minor issue. the "NOT" icon should have only one input line.
More serious: Observe the function of this "XOR" gate. The "AND"s should be true if both inputs are true. The "OR"s should be true if one or both inputs are true.
The final "AND" gate of an "XOR" structure should be true if one and only one input (activator) is true.
This is the 20140413 Dev release
Minor issue. the "NOT" icon should have only one input line.
More serious: Observe the function of this "XOR" gate. The "AND"s should be true if both inputs are true. The "OR"s should be true if one or both inputs are true.
The final "AND" gate of an "XOR" structure should be true if one and only one input (activator) is true.
This is the 20140413 Dev release
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