本设计以LPC2103为控制芯片，探索研究了低频信号发生器的原理和应用，设计输出频率及幅度可调，频率范围为1HZ～50KHZ的正弦波、方波、三角波、调幅波、调频波及其复合波信号，具有信号频率、波形、幅度变化容易，硬件简单可靠等特点的多功能信号源。-For the control of the LPC2103 chip design, explore and study the low frequency signal generator theory and application of design Adjustable output frequency and amplitude, the frequency range 1HZ ~ 50KHZ sine wave, square wave, triangle wave, amplitude modulation, frequency modulation wave and its compound wave signal with the signal frequency, waveform, amplitude change is easy, simple and reliable hardware features such as multi-signal source.