"基于C语言的单片机波形发生器设计与实现"

The document "Engineering-based single-chip waveform generator in C language.pdf" introduces a waveform generator controlled by a monolithic integrated circuit. This waveform generator, as a testing device, is widely used in the testing of large-scale and super-large-scale integrated circuit chips and in the design of digital systems. The system designed in this document can realize the generation of standard waveforms, including setting the amplitude and frequency functions. To fully realize these functions, the keyboard input function is also expanded to adjust the output signal. The adjustment of the waveform's amplitude and frequency in this system is mainly implemented by software. Firstly, a waveform generator circuit is built using MAX038, then this waveform generator circuit is controlled by a single-chip microcontroller, and the user-input data from the keyboard is used to change the waveform through software, with D/A conversion implemented by DAC083. The generator outputs three types of signal waveforms: sine wave, triangle wave, and square wave, and the frequency of the output signal can be adjusted in the range of 1Hz to 1KHz through programmable control. The maximum amplitude is 3V, and the output waveform is stable with minimal distortion. Keywords: microcontroller, waveform generator, MAX038.