介绍了一种由 AT89C51单片机控制的八通道数据采集电路的设计 ,解决了数据采集分时选通、自动触发、程控放大及程控滤波等数据采集中的常见问题 ,为各种瞬态信号的测试提供了一种切实可行的电路 This paper introduces the design of an eight-channel data acquisition circuit controlled by AT89C51 microcontroller and solves the common problems in data acquisition such as time-division strobe, automatic trigger, program-controlled amplification and program-controlled filtering, Provides a practical circuit