［单片机仿真］谁能帮我写一下代码吗？用C语言编写，并附上proteus仿真图，谢谢！

#include#define uchar unsigned charsbit pluse=P1^0;uchar pwm;void t0isr() interrupt 1{pwm++;pwm%=5;if(pwm<4)pluse=1;else pluse=0;}main(){TMOD=0x02;TH0=256-80;TL0=256-80;TR0=1;ET0=1;EA=1;while(1);}