此为本人设计的函数发生器，可以输出方波，三角波，正炫波-This is my design of function generator, can output pulse, triangle wave, is dazzle wave

用单电源供电lf353，产生多种信号，方波，三角波，正弦波(A single power supply is used to supply lf353, producing a variety of signals, square wave, triangular wave, sine wave)