基于51单片机，定时器延时2.5s

#include <REGX51.H> int c=1; sbit LED=P2^0; void main() { EA=1; TR0=1; ET0=1; TMOD=0x01; TH0 = 0x9e; TL0= 0x58; while(1) { if(c==100){ LED=~LED; c=1; } } } void time()interrupt 1{ TH0 = 0x9e; TL0= 0x58; c++; }