boolean stat = digitalRead(digitalInPin);

This line of code reads the digital input pin and stores the value in a boolean variable called "stat". The value returned by digitalRead() function can be either HIGH or LOW, which corresponds to the voltage level on the pin.

If the voltage level is above a certain threshold, the function returns HIGH, which is equivalent to a logic 1. If the voltage level is below the threshold, it returns LOW, equivalent to a logic 0.

The boolean variable "stat" can then be used in the code to perform certain actions based on the input value. For example, if "stat" is true (HIGH), the code might turn on an LED or trigger a motor to start running. If "stat" is false (LOW), the code might turn off the LED or stop the motor.