Abstract

In this article computer-aided experimentation means using the microcomputer as a laboratory instrument emulator, data logger, and analyzer in an experiment. Through an inexpensive, yet versatile experiment involving an RLC circuit, this article describes how to use the microcomputer as a pulse generator/voltage source, a digital oscilloscope, an ac voltmeter, a frequency meter, and a data logger and analyzer by investigating its time- and frequency-domain behavior. Excellent agreement is found between experiment and theory, which validates the measurement, hardware, and software techniques used. A new and accurate method for characterizing L and C at the natural frequencies of the RLC circuit is also presented.

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