An operational amplifier (op-amp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. Op-amps are among the most widely used electronic devices today because they are affordable, versatile, and readily available. They are used in a vast array of applications, including signal amplification, filtering, voltage regulation, and various forms of analog and digital computation. They are typically implemented as integrated circuits.
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