Displays the voltage of the left source (from 0.0 to 9.9) with the ones digit (top display) and one decimal place (bottom display). This could theoretically be expanded to more decimal digits.
The top opamp subtracts 0.5V because the ADCs round up. This is converted to digital and displayed (top right). This digital signal is converted back to analog, which drops the decimal place. Then, this is subtracted from the original signal with the bottom opamp, yielding only the decimal place. Then this is converted to digital and displayed in the bottom left. The bottom ADC is set to 1/10 of the top ADC's reference voltage.
This could be included in a multimeter with a digital display.
