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Operational Amplifiers (Op-Amps). Developed in 1940. Used to control voltage in analog circuits (Mathematical non-digital communication) First use was in conjunction with radar in 1941 to detect artillery
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Developed in 1940 Used to control voltage in analog circuits (Mathematical non-digital communication) First use was in conjunction with radar in 1941 to detect artillery By controlling the flow of negative or positive input the output voltage can be tightly controlled (as small as microamps) Come in many different shapes and forms Used in modern day computers Constructed with vacuum tubes prior to the transistor age Made the calculations by adjusting the feedback loop (this feedback adjusted the voltage output without being a part of the output circuit) Provide infinite gain (amplification)