A digital load cell outputs numbers to the indicator while an analog load cell outputs voltage.
The output of analog load cells depends on applied voltage (the voltage supplied to the load cell by the indicator). For example, if a voltage of DC 10V is applied to a load cell with a rated output (the voltage difference of the output when unloaded and the output at the rated capacity) of 2 mV/V and a load at the rated capacity (the maximum load the load cell is designed to measure while maintaining these specifications) is applied, the load cell outputs 20 mV (2 mV x 10V). If the applied voltage is DC 8V, the output is 16 mV (2 mV x 8V). On the other hand, digital load cells output the load applied to the load cell as a digital value (a number), regardless of the applied voltage.