What is SDIO?

Secure Digital Input/Output (SDIO) is an important standard for devices that feature interchangeable memory options. In today’s explosive world of wearable electronic devices, that number is really big.

An SD card.

Memory is stored in various forms of devices. Portable and non-portable devices store information on internal and external hard drives. External hard drives have varying degrees of portability, primarily due to the size of the drives.

Smartphones use SDIO cards.

One way to store memory is on a smaller hard drive. They come in a few shapes and sizes. One is called Memory Stick. Another is called a Secure Digital (SD) card. This is where SDIO comes in.

An SDIO card is an advanced form of an SD card. An SDIO card can include much more than just data files. In fact, many SDIO cards come close to a minicomputer or a powerful software application. SDIO cards can power Bluetooth® adapters, Global Positioning System (GPS) receivers, television tuners, cameras, scanners, voice recorders, and even fingerprint readers. Each of these SDIO cards has a set of features.

The primary user of the SDIO card is the smartphone, the powerful handheld device that offers images, music, video, email and perhaps even Internet browsing, using the phone’s cellular connection or a nearby WiFi hotspot. Smartphones are, in some cases, a step away from a laptop. Because they offer all these functions, they need a lot of memory.

Many portable electronic devices have “slots” into which users insert sticks or cards of varying storage capacities to transfer data in both directions. Slots are generally proprietary, accepting only one form of portable data storage device. Adapters containing more than one slot are available, but the slots themselves are dedicated.

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A handheld device with an SDIO card slot can accept both SDIO cards and SD cards. The reverse is not true, in the same way that a Universal Serial Bus (USB) 2.0 port can enable a USB 1.0 device, but not vice versa. Older technology cannot accommodate updates.

SDIO cards were created to meet a growing demand for multimedia content. In fact, an SDIO card is an amalgamation of an SD card and an I/O device. This type of combination is increasingly found in portable electronic devices, especially as these devices increasingly offer high-definition or resolution capabilities and , consequently, require more and more memory. Higher memory requirements call for more memory storage, and the SDIO card fills that bill very well.

Digital video recorders can make use of SDIO technology.

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