许多笔记本电脑和mobile devices you can buy today have built-in slots for Secure Digital memory cards, usually just called SD cards. AnSD卡是一种具有许多有用功能的存储设备,具体取决于其使用方式和位置。这是您可能已经使用SD卡的一些常见方法:
- 您可以将SD卡添加到小型设备(例如手机)中,以扩展可用于铃声,文本,应用程序,音乐和其他数据的存储空间。
- When one SD card in your camera fills up with photos and videos, you can swap it out for an empty SD card instead of deleting any files.
- You can save files to an SD card to transfer them between devices or give them to someone else.
SD卡s conform to standards developed and maintained by the Secure Digital Association. Panasonic, SanDisk and Toshiba formed the SD Association in January 2000 with the goal of developing and promoting standards for闪存记忆storage. SanDisk's technology, already a global leader in flash memory products, became a template for the new standards.
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SD协会的总部位于加利福尼亚州圣拉蒙的总部不会自行制造或销售任何产品。但是,目前有1,000多个协会成员,主要是全球主要电子制造商,目前有助于SD标准的持续改进。这些标准涵盖了SD卡本身,以及用于读写并写信给它们的硬件和设备驱动程序。
您可能使用其他单词(例如内存卡或闪存)来描述对话中的SD卡。但是,内存一词可能会对某些人产生误导,因为它也用于谈论随机访问记忆(内存),在计算中起着完全不同的目的。Flash一词描述了将数据保存到SD卡内的固态材料上的手段,您可以在其中阅读。闪存如何工作。在这里,我们将使用术语SD卡,因为我们说的是符合SD标准并体现SD协会的商标的闪存内存设备。
In this article, we'll zoom in on SD's various form factors, capacities and speeds and take a look at the features, advantages and challenges of Secure Digital cards. Let's start with the types of SD cards available today.
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