ATMega328P单片机输入时钟频率为16MHz,上传运行以下Arduino代码,LED灯闪烁周期约为( )intflag=0;voidsetup(){TCCR1A=0;TCCR1B=0;TCCR1B=0x04;TIMSK1=0x01;pinMode(13,OUTPUT);}ISR(TIMER1_OVF_vect){digitalWrite(13,flag?HIGH:LOW);flag=!flag;}voidloop(){}? 4ms8ms1s2s 相关知识点: 试题来源: ...