Introduction - If you have any usage issues, please Google them yourself
The experiment needs to implement a simple three buttons control the three LEDs light or dark control. For example, button 1 controls the light emitting diode 1. On initial power light emitting diode 1 does not shine, when it detects a button 1 is pressed, a light-emitting diode lights, when the button 1 is pressed again, the light emitting diode 1 is not bright, and so forth. The experiment requires a good grasp of key debounce detect design skills.