DDS直接数字频率合成器，能产生正弦波，方波，锯齿波，三角波四种波形，同时能在12864上显示波形类型和频率，用FPGA verilog实现的-DDS direct digital frequency synthesizer can produce sine, square wave, sawtooth wave, triangle wave four waveform, while in the 12864 on display the waveform type and frequency

应用51单片机的12864坐标显示程序，熟悉LCD屏的使用，从而进一步使用12864画图或者显示波形！-12864 coordinates of the application of 51 single-chip display program, familiar with the use of the LCD screen, which further 12864 draw or display the waveform.