基于单片机的多路数据采集系统的设计方案，采用的是AD0809和51单片机，及LED液晶显示-To ADC0809 and 8051 as the core of the system, including three parts: data collection, data processing and display, the terminal receiver. Including its control, display, A/D converter, power conversion interface, personal computers. Design using ADC0809 data for 8 samples, using MCS-51 microcontroller serial port to send and receive data. Shown in part by the LED digital display 8155,75452,7407 and composition. Application of electronic design automation hardware design tools, software design modular programming method, based on KEIL C compiler platform