What is a Operational amplifier?

An operational amplifier is an integrated circuit that has two input terminals and one output terminal and can amplify and output electrical signals on the input side. It is an abbreviation of "operational amplifier" and is also called an operational amplifier. By devising the circuit elements that are connected to an operational amplifier, it is possible to add arithmetic functions such as addition, subtraction, and time integration of the input voltage in addition to simple amplification.

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