内存卡上常见A1、A2等标识。A1和A2的全称分别是Application Performance Class 1和Application Performance Class 2,它们代表了应用表现的不同等级。这些等级参数为安卓等智能设备在选择扩充容量的存储卡时提供了便利。A1和A2等级的读写速度最低要求都是10MB/s,但如果用于安装应用程序,则需要较高的随机读写性能,因此应...
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Some time ago SD Association tried to address this problem and defined also specs and 'speed classes' for random IO access patterns mainly with Android in mind: the Application Performance Classes A1 and A2 were invented. Application Performance Class 1 (A1) This performance class requires at lea...
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