Hi, I pulled apart an old laser printer and took out the LCD screen and the chip that it's attached to, which has 9 buttons and a green LED. I figure that if I can reverse engineer this thing, it'd be a neat place to start with learning some Arduino. My question is where do I start? Is reverse engineering something like this too complicated for a beginner? What would be the process that I go through to understand the circuitry of the thing? I figure that I need to start by understanding which pins control which buttons and LEDs, and which pin the ground is but it's not obvious to me how to do this.