TechMillForKids/include/halfadder1_example00.tex at master · jessehamner/TechMillForKids · GitHub

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\begin{circuitikz}

% Gates:
\draw
	(4,2) node[xor port](xorGate) {} % xor gate
	(4.2,3.0) node[left] {$XOR$} % XOR label

	(4,0) node[and port](andGate) {} % AND gate
	(4.2,-1.0) node[left] {$AND$} % AND label
;

% Input nodes:
\draw
	(0,2.27) node[ocirc](ainput) {} % A node
	(0,2.3) node[left] {{\color{red}$A = 0$}} % A label

	(0,1.72) node[ocirc](binput) {} % B node
	(0,1.72) node[left] {{\color{red}$B = 0$}} % B label
;

% Output nodes:
\draw
	(5,2) node[ocirc](snode) {} % S node
;

\draw (xorGate.out) to (snode) % S output wiring
;

\draw (5,2) node[right] {{\color{red}$Sum$}} % S label
;

\draw
	(5,0) node[ocirc](cnode) {} % C node
	(andGate.out) to (cnode) % C output wiring
	(5,0) node[right] {{\color{red}$Carry$}} % C label
;

% Nets:
\draw (ainput) -- (xorGate.in 1) % xor A wiring
;

\draw (binput) -- (xorGate.in 2) % xor B wiring
;


\draw (1.5,1.72) |- (andGate.in 1)
;

\draw (1,2.27) |- (andGate.in 2)
;


\draw (1,2.27) node[circ] {}
;

\draw (1.5,1.72) node[circ] {}
;


\end{circuitikz}