Why? I will explain, but first let me say to those who have been playing with this puzzle: (a) You can not use XOR gates and (b) there really is a solution. In fact, as “The Black Adder” would say ...

As an example, let’s consider the AND gate (the others are OR, NOT, NAND, NOR, XOR and XNOR). Electronic gates operate on two nominal voltages, normally 0 V and 5 V, representing the logic 0 ...

so useful in fact engineers gave it its own symbol too -- an OR gate with a smile :) But most importantly, we can now put XOR into our metaphorical toolbox and not have to worry about the ...

It is worth noting that 3XOR logic gates are not manufactured by the industry. It will be shown below how 2XOR and 3XOR elements can be synthesized from a set of standard discrete elements. Figure 1 ...

There usually follows a demonstration of simple AND, OR, and XOR gates made from NAND gates ... part of your electronics general knowledge. Not [Alexander Shabarshin] though.