以微机电子皮带秤的设计为例，从信号的放大、采集、计算处理到输出，较完整地分析了整个仪表测量误差的构成，并且从保证精度和降低成本的角度出发，对系统的硬件、软件进行了选型和设计。这种设计分析方法也可供设计类似的单片机系统时参考 Taking the design of microcomputer electronic belt scale as an example, from the signal amplification, acquisition, calculation and processing to the output, a complete analysis of the entire measurement error of the instrument structure, and to ensure accuracy and reduce costs point of view, the system hardware, Software was selected and designed. This design analysis method is also available for reference when designing a similar microcontroller system