本设计主要采用单片机来控制各单元电路实现光控计数的。本设计由红外对管计数电路、STC89C52单片机系统电路、复位电路和数码显示电路组成，首先由红外对管计数电路将接收的信号转换为电脉冲信号，由单片机计数，再由数码管显示数目的增加或减少，实现自动计数的功能。-This design uses microcontroller to control each unit to achieve light control circuit count. The design of the infrared tube counter circuit, STC89C52 SCM system circuit, reset circuit and a digital display circuit, first by infrared tube count signal conversion circuit receives an electrical pulse signal　the microcontroller count, and then　the digital display numbers increasing or decreasing, the function of automatic counting.