Second part of Video

digikey tutorials/part 3/and_gate.v

@@ -1,15 +1,21 @@
-// Modeule: when buttons 1 and 2 are pressed, turn on LED
+// module: button 0 lights up 2 leds, button 0 and 1 light up another
 
 module and_gate (
     // Inputs
-    input      pmod_0,
-    input      pmod_1,
+    input      [1:0]    pmod,
 
     // Outputs
-    output      led_0
+    output      [3:0]    led
 );
 
-    // Continuous assignment: not and and operators
-    assign led_0 = ~pmod_0 & ~pmod_1;
+    // 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