A kind of data acquisition card based on USB is designed, data acquisition and temporary storage are achieved by MCU ATmega128 and IDT7132. AT89S51 transmits data to upper computer by USB interface IC FT245BM.

• 设计了一种基于USB总线的数据采集卡,采用ATmega128单片机结合IDT7132双端口RAM完成数据采集和暂存,并由AT89S51单片机通过USB接口芯片FT245BM完成与上位机的数据传输。