Editing Adder (electronics) (section)

== Analog adders ==
Just as in Binary adders, combining two input currents effectively adds those currents together. Within the constraints of the hardware, non-binary signals (i.e. with a base higher than 2) can be added together to calculate a sum. Also known as a "summing amplifier",<ref>{{cite web | url=https://www.electronics-tutorials.ws/opamp/opamp_4.html | title=Summing Amplifier is an Op-amp Voltage Adder | date=22 August 2013 }}</ref> this technique can be used to reduce the number of transistors in an addition circuit.