What is the difference between mmc and mms? Everybody help.

MMC(MultiMediaCard) was initiated by SanDisk and Siemens in 1997. Compared with the traditional mobile memory card, its most obvious external feature is its smaller size-only the size of an ordinary stamp (about the size of a CF card 1/5), and its overall size is only 32 mm× 24 mm× 1.4 mm, which makes it the smallest semiconductor mobile memory card in the world and forms a strong support for various handheld devices that are increasingly pursuing portability.

MMC was originally designed for the mobile phone and pager market, and later it was quickly introduced into more application fields because of its unique advantages such as small size, such as digital cameras, PDA, MP3 players, notebook computers, portable game machines, digital cameras and even hand-held GPS.

In addition, due to the lower working voltage and the driving voltage of 2.7-3.6V, MMC saves more power than previous generation products such as CF and SM. At present, the common capacity is 64MB/ 128MB, and ATPELECTRONICS has taken the lead in introducing the large-capacity MMC card of 1GB.

With the development of MMC card, more and more high-tech RS-MMC and MMC micro cards have appeared.

RS-MMC (reduced size MMC), each RS-MMC contains a mechanical expander, which can convert RS-MMC into standard MMC and is suitable for all devices compatible with MMC or SD card.

RS-MMC features: large storage capacity, non-volatile solid state, automatic storage of power-off data; No rotating parts, which prolongs the service life of the battery; Can withstand the working vibration rate of 2000 Gs, which is equivalent to falling from 10 feet to the floor; Compatible with digital music players, digital cameras, mobile phones and all other devices with MMC slot characteristics.

MMC micro memory card is still a strange term for most users, and its standard is formulated by Samsung. At present, it is mainly used by Samsung's specific models, so there are not many opportunities for domestic users to contact this memory card. The actual size is about one third of the volume of RS-MMC. Support 1.8V/3.3V working voltage, pin 10pin. The product itself has strong audio-visual function and low power consumption, which is very suitable for small digital devices such as mobile phones, MP3 players and PDA.

MMS multimedia message service or multimedia message service is one of the highest standards for the development of short message technology. Its biggest feature is that it can support multimedia functions. With the help of EDCE (enhanced data rate of GSM e-operation) and GPRS high-speed transmission technology, WAP is used as a carrier for transmitting video clips, pictures, sounds and words, which can be used not only for multimedia transmission between mobile phones. It can also be transmitted between the mobile phone and the computer; The average short message capacity is 30,000 bytes, and the maximum can reach 654.38+ million bytes. The mobile phone with MMS function has a built-in media editor, which can write multimedia information. If a built-in or external camera is installed, users can also make and transmit information or electronic postcards in PowerPoint format.