<b>
+5v           	                                   +5v
---             	                           ---
|       	                    ____________    |
+---(1k ohm)--(led)---(inverter)---|p1.0     VCC|---+
|              	           	   |            |   |
+				   |            | (1µf)
|                       	   |            |   |
+---(1k ohm)--(led)---(inverter)---|p1.1        |  gnd
 				   |            |
 				   |            |
</b>