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微型计算机主机板微型计算机主机板 Motherboard of MicrocomputersMotherboard of Microcomputers 2 主机板主机板 MotherboardMotherboard 芯片芯片 chipchip 扩展插槽扩展插槽 expansion slotexpansion slot 对外接口对外接口 external external interfaceinterface Chips CPU，BIOS，Chip set,etc.Expansion slot memory slots,bus slots Interface In MotherboardIn Motherboard Coordinate and control over the operation of the whole system Basic Input and Output System.Functions:automatic system check,system initialization,system settings