SD cards are widely used for Microsoft Windows operating systems just as MMC cards are favored in open-source operating systems.
The MMC card, also known as a multimedia card, uses a file format developed by the Sandisk and Siemens AG corporations. It was created primarily for use with open-source operating systems, such as Linux, Ubuntu, Knoppix, and all other Unix-based operating systems, as the MMC format is itself open-source. Many large companies, such as Samsung, want to move from Secure Digital technology to MMC technology due to the open standard.
Open-Source
MMC is an open-source format, which allows third-party users to take the code and modify it to their personal needs. For example, a company can take the MMC format, improve it or add advanced features to the code (such as copy-write protection) and distribute it.
Capacity & Data Transfer
Multimedia cards can store a maximum amount of 32GB. The maximum data transfer rate of a MMC card is 20mbps. However, modified MMC formats, such as MMC Plus, can reach speeds of up to 416mbps.
Compatibility
Most devices that support SD technology support MMC technology as well. However, few manufacturers build MMC slots into devices or computers as it is used much scarcely than other formats, such as SD, CF or MS.
Tags: operating systems, formats such, open-source operating, open-source operating systems, support technology