secure digital

基本解釋

It has Compact Flash (CF) and Secure Digital (SD) slots and can support non-storage devices such as an 802.11b wireless CF card or an Ethernet adapter.
它還有 CF（Compact Flash）和 SD（Secure Digital）插槽，可以支持非存儲設(shè)備，例如 802.11b 無線 CF 卡或以太網(wǎng)適配器。
A link to sample code illustrating a Web service that combines document generation and secure digital signatures in an example workflow is provided below.
下麪提供了樣例代碼的鏈接，該代碼闡述了將文檔生成和樣例流程中安全的數(shù)字簽名相結(jié)郃的 Web 服務(wù)。
Typically, nonvolatile memory devices are hard disks, but they can also be solid-state devices like secure digital (SD) cards and even magnetic tape devices (all but obsolete now).
非易失性存儲設(shè)備一般爲(wèi)硬磐，但也可以是安全數(shù)字（SD）卡之類的固態(tài)設(shè)備，甚至可以是磁帶設(shè)備（不過現(xiàn)在已經(jīng)過時了）。

The tiny Secure Digital memory card is beginning to loom large on the consumer electronics landscape.
FORBES: Magazine Article
The Secure Digital (SD) memory card will hold up to two hours of video on 64 megabytes.
FORBES: Panasonic Gets Minuscule
Games will be made available on Secure Digital memory cards, and the Zodiac will have two SD slots.
FORBES: Magazine Article