This chip is AT89C2051 produced by ATMEL Company. The chip converts binary into BCD code, and the information puts in LCD, displays the correct data.

• 采用单片机控制,其芯片是由ATMEL公司生产的AT89C2051,通过该芯片将二进制信息转化为BCD码,输出到液晶显示器,显示其正确的压力值。