设mcs-51单片机中,晶振频率为12mhz,编程实现使p1.0和p1.1分别输出周期为...答:LJMP MAIN ORG 000BH LJMP T0ISR ORG 0030H MAIN:MOV TMOD,#01H MOV TH0,#HIGH(65536-250)MOV TL0,#LOW(65536-250)SETB TR0 SETB ET0 SETB EA MOV R2,#0 SJMP T0ISR:CLR TR0 MOV TH0,#HIGH(65536-250)MOV TL0,#LOW(65536-250)SETB TR0 CPL P1.1 INC R2 CJNE R2,#4,T0...