w_3_Analog Input

Through labs of digital input and analog input, I learned how to wire circuit with microcontroller.
After reading an explanation of microcontroller chip, I figured out how it works.
For this lab of analog input, I succeeded in transmitting data through DB9 serial connector.
By adjusting potentiometer, I varied current flow, and accordingly data values transmitted to a computer.
Yet I could not make my own code. I will keep trying to code my own.