现代电子技术Issue(16)：14-17,4.
基于单片机的低频信号发生器设计
Design on low-frequency signal generator based on SCM
摘要
Abstract
The design approach and working principle of a low-frequency signal generator based on AT89C51 are intro-duced. The hardware design was simplified by using external memory extended with SCM and DAC interface technology. The wave code after discretization processing of waveform signal is read out though a waveform selection circuit,and reverted to the needed waveform by the D/A converter. The output signal frequency is adjusted by changing the wave code output speed of the memory. The amplitude is adjusted by changing the magnification of the amplifier. The waveform discretization processing method, and the relation between data sampling number and storage capacity are discussed. The system structure chart and software flow chart are given.关键词
低频信号/数据离散化/幅值/典型信号Key words
low-frequency signal/data discretization/amplitude/typical signal分类
信息技术与安全科学引用本文复制引用
任小青,王晓娟,田芳..基于单片机的低频信号发生器设计[J].现代电子技术,2014,(16):14-17,4.基金项目
春晖计划 （）
