Microcontroller Generates Analog Gaussian Waveform Without Need For A DAC

摘要

Laboratory data often appears as Gaussian curves. Today's laboratory data-acquisition software is designed to analyze these data to determine peak location, amplitude, area, width, and more. A good test signal is useful in developing such soft- ware, and it is best when the test signal resembles actual analog data including noise. Many years ago, while I was still a student, a professor and I built a few Gaussian-curve generators for students to use in a teaching laboratory. Since those were the days before inexpensive microcontrollers, you can imagine the complexity of such circuitry.