Abstract: An operating method for a Battery Energy Storage System (BESS) is provided. The BESS includes a processor and a plurality of energy storage units coupled in parallel, wherein each energy storage unit includes a Power Conservation System (PCS) and a battery module. The operating method includes performing following steps by the processor: obtaining a dedicated operation power of the BESS; calculating a remaining operation period of each energy storage unit according to a maximum operation power of each PCS and a remaining power quantity of each battery module; determining an operational order corresponding to the plurality of energy storage units according to the remaining operation period of the plurality of energy storage units and the dedicated operation power of the BESS; and controlling an operation of each energy storage unit according to the operational order.

Abstract: A digital microphone is provided, comprising a transducer for converting sound pressure into an analog electrical signal, an analog-to-digital converter for converting the analog electrical signal into a digital signal according to a clock signal, and a clock buffer circuit coupled between the analog-to-digital converter and a clock source for deducting a high frequency component from the clock signal received from the clock source.