单片机波形发生器的设计， 本次课程设计使用的 8051 单片机构成的发生器可产生方波、三角波、锯齿波、正弦波等多种波形，波形的周期可以用程序改变，并可根据需要选择单极性输出或双极性输出，具有线路简单、结构紧凑、价格低廉、性能优越等优点。在本设计的基础上，加上键盘控制和LED显示器，则可通过键盘设定所需要的波形频率，并在LED上显示。-SCM waveform generator design, curriculum design used in this 8051 composition can produce a square wave generator, triangle wave, sawtooth, sine and other wave, wave period can be program changes, and may need to select a single output, or bipolar output polarity, with a simple circuit, compact, low cost, superior performance advantages. On the basis of this design, combined with keyboard control and LED display, the keyboard may be required to set the waveform frequency, and the LED display.