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介绍了利用８０３１单片机制作的后备式方波ＵＰＳ电源的硬件组成和软件设计，其特点是电路结构简化，多方面提高了电源性能，增强了适用性，而总生产成本基本不变
The hardware composition and software design of back-up square wave UPS power supply made by 8031 single-chip microcomputer are introduced. The characteristic of the hardware structure and software design of the back-up square wave UPS power supply is that the circuit structure is simplified, the power performance is enhanced in many aspects and the applicability is enhanced, while the total production cost is basically unchanged