人体红外感应器，适用于STC12C5A60S2以及89C51单片机，适用于新手学习。望个网友予以支持，非常感谢。-The human body infrared sensor, suitable for STC12C5A60S2 and 89C51 microcontroller, suitable for beginners to learn. At a netizen gives support, thank you very much.