The hardest part of designing a properly guarded switch is to fit all the traces on the board and maintain proper voltage spacing.
设计一个合适的保护开关的最难点是适合印制板上的所有布线，并保证适当的电压空间。
Underlying data acquisition board used PIC18F248 as the main chip, completing voltage monitoring, temperature measurement, CAN communication.
下层数据采集板选用PIC18 F 248作为主芯片，完成电压监测、温度测量、CAN通信等功能。
The virtual multimeter based on ISA bus is divided into computer and ISA bus board. It is composed of A/D conversion, alternating voltage measurement, resistance measurement and interface circuit.
基于ISA总线的虚拟万用表，分计算机和ISA总线板卡两部分，由A/D转换、交变电压测量、电阻测量及接口电路组成。
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