What does TT mean? What does TF mean?

Also known as T-Flash card, full name: TransFLash, by Motorola and SANDISK*** with research and development, launched in 2004. It is a kind of ultra-small card (11*15*1MM), about 1/4 of the SD card, can be counted as the smallest memory card.TF card can be used as SD card after SD card converter. The adapter can be used in devices that use SD as a storage medium.TransFlash is mainly developed for camera phones to capture large images and to be able to download larger video clips.TransFlash cards can be used to store personal data such as digital photos, MP3s, games, and applications for cell phones and personal data, and have a built-in copyright protection and management system to allow downloads of music, images, and video clips to be stored on the card. It also has a built-in copyright protection system to protect downloaded music, videos and games, and future versions of TransFlash will include encryption to protect personal data, financial records and healthcare documents. The compact size of TransFlash allows manufacturers to adopt this design without worrying about the size of the phone, and another flexible application is to allow suppliers to make substitutions at any time prior to delivery according to the different needs of the customer, which is an advantage not available with embedded flash memory.