简易数控直流电源程序，通过扩展8051单片机IO端口控制数码管显示，可产生方波，正弦波，三角波，梯形波等-Simple NC DC power source, through the expansion 8051 IO port control digital display, can produce a square wave, sine wave, triangle wave, trapezoidal wave, etc.

it s code sine wave with 8051 using C code