In the early 1980S, when the computer revolution brought us removable storage media, all we had to worry about was two floppy drives—A: and B:. By the late 1980s, the advent of consumer hard drives eliminated the need for swapping those 5.25-inch disks, but we had another drive letter, C:, to contend with. Since then, the alphabet soup has boiled over—the latest Media Center PCs with multiple memory-card slots can have drive letters A: through P: inside. My Media Center PC is one of several computers in my home, and I'd given up on keeping track of what these letters represent—until I figured out that Microsoft Windows could show me at a glance which leads to the SD card from my camera, the Memory Stick Duo card from my Sony PlayStation Portable, or the CompactFlash card for my PDA.
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机译：在1980年代初期，当计算机革命为我们带来了可移动存储介质时，我们只需要担心两个软盘驱动器-A：和B:。到1980年代后期，消费类硬盘驱动器的出现消除了更换那些5.25英寸磁盘的需要，但是我们还有另一个驱动器号C：可以应付。从那时起，字母汤就沸腾了—具有多个存储卡插槽的最新Media Center PC的内部可以有驱动器号A：到P:。我的Media Center PC是我家中的几台计算机之一，我放弃了跟踪这些字母的含义-直到我发现Microsoft Windows可以让我一目了然，并从相机中获取SD卡，Sony PlayStation Portable上的Memory Stick Duo卡或PDA上的CompactFlash卡。
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