Scale, stop-clock, laboratory balance, thermometer, pH meter.
尺规，计时器，电子秤，温度计，酸碱度计。
By taking pH meter made of MCU as an example this article introduces the general principle system structure and software making process of intelligent meters.
以用单片机制作智能酸度计为例，介绍了基于单片机的智能仪表的一般原理、系统结构及其软件编制流程。
This article presents the Characteristics and design thoughts of the Pre-amplifier of PH Meter, the application of the relevant techniques of EMC and the measures that used in the design.
介绍了PH计前置放大器的特点及其设计思想，阐述了电磁兼容相关技术的应用以及设计中所采取的措施。
This article presents the Characteristics and design thoughts of the Pre-amplifier of PH Meter, the application of the relevant techniques of EMC and the measures that used in the design.
介绍了PH计前置放大器的特点及其设计思想，阐述了电磁兼容相关技术的应用以及设计中所采取的措施。
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