A stateless Facade maintains no internal memory of previous operations, therefore relying on necessary state to be passed in with each method invocation.
无状态的Facade并不包含上一个操作的内部记忆,因此就依赖于每个方法调用传递过来的必需的状态。
Because all information is saved in an internal EEPROM memory, no battery is required.
因为所有的信息保存在一个内部EEPROM存储器,无需电池是必要的。
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