Using Vex Sensors Line Tracking Kit instead of sensors provided

[DavidGitz]

"The line tracker is an analog sensor, meaning that it can output many more values within its range of potential values (in this case, from 0-5V) than a digital sensor, which would output only a handful of discrete values in the range (e.g., 1, 2, 3, 4, and 5V), as is the case for a digital sensor. This range of output from 0-5V is sent to the microcontroller, which translates it into a corresponding range of integer values from 0-255."

Wow, a digital sensor that outputs discrete values based on voltage. That is a WEIRD way to put it.