51单片机产生三角波,正弦波,方波,并通过串口从上位机发送命令改变波形幅值等

51单片机产生三角波,正弦波,方波,并通过串口从上位机发送命令改变波形幅值等-51 Single-chip generated triangular wave, sine wave, square wave, and through serial port from a PC to send commands to change the waveform amplitude, etc.