Electronic device and controlling method for checking health index

不用增设特别的通信部，就能够简单地进行各种外部控制，提高生产率。包括：电源接受部(21)，被连接在驱动用的电源(50)上；电压测定部(22)，测定输入到电源接受部(21)中的电源电压的变化；信号提取部(23)，分析该测定数据，提取测定数据中包含的数字代码；以及控制部(24)，根据提取出的数字代码来进行特定控制。作为特定控制，控制部(24)从可选择性地执行的多个工作模式中，选择与数字代码对应的特定工作模式。或者，进行与数字代码对应的特定功能设定。或者，将数字代码作为个别信息写入到非易失性存储器中。 Electronic instrument for measuring a health index, e.g. blood pressure, has a power receiving part for connecting to a power supply, a voltage measurement part for measuring variations in the supply voltage, a signal acquisition part that analyzes measurement data and outputs a corresponding signal and a control unit that implements a special control method based on the signal received from the signal acquisition part.