本文以MCS-51单片机为开发平台，设计一个基于单片机的数据采集系统。系统可以采集16路模拟量，精度为12位，16路开关量和2路脉冲量，并将采集到的数据每隔一分钟通过串口发送到PC机。-In this paper, MCS-51 microcontroller as the platform to design a microcontroller based data acquisition system. System can capture analog 16, a precision 12-bit, 16 2-way switch volume and pulse volume, and data collected every minute via the serial port to send to the PC.