Second part of Video

digikey tutorials/part 3/Full Adder/Full Adder.v

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+// module: button 0 lights up 2 leds, button 0 and 1 light up another
+
+module full_adder (
+    // Inputs
+    input      [1:0]    pmod,
+
+    // Outputs
+    output      [3:0]    led
+);
+
+    // Wire (net) declarations (internal to module)
+    wire not_pmod_0;
+
+    // Continous assignmen:replicate 1 wire to 2 outputs
+    assign not_pmod_0 = ~pmod[0];
+    assign led[1:0] = {2{not_pmod_0}};
+
+    // Continuous assignment: NOT and AND operators
+    assign  led[2] = not_pmod_0 & ~pmod[1];
+
+endmodule