This presentation summarizes the study and simulation of an adder amplifier circuit. It introduces operational amplifiers and describes their history. It also discusses different types of op-amps including ideal, summing, and difference amplifiers. The presentation demonstrates a simulation of an op-amp configured as an adder and summarizes that the circuit outputs the sum of the two input voltages. In conclusion, it explains how op-amps can be used for addition or subtraction depending on the circuit configuration.