What is an op amp
I need to know about operational amplifiers (OP AMP).
An op amp is a voltage amplifying device. It can perform mathematical operations such as addition, subtraction, multiplication, division, differentiation and integration.
Also an operational amplifier is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. Op-amps may be packaged as components or used as elements of more complex integrated circuits.