51单片机检测低电平保持时间的程序，实际使用采用红外线发射接收一体的小板来检测物体接近和离开的时间-51 SCM test low to maintain time-consuming procedures, the actual use of infrared transmitting and receiving one of a small plate to detect objects close to and departure time of

51单片机模拟红外发射程序，采用汇编语言编写。-51 single-chip analog infrared emission program in assembly language.

单片机红外发射(原理与设计程序) -SCM infrared emission (theory and design program) microcontroller infrared emission (principle and design process)

单片机红外发射(原理与设计程序) -SCM infrared emission (theory and design program) microcontroller infrared emission (principle and design process)