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2. External storage - Wikipedia

   en.wikipedia.org/wiki/External_storage

   Storage as distinct from memory in the early days of computing was always external to the computer as for example in the punched card devices and media. Today storage devices may be internal or external to a computer system. In the 1950s, introduction of magnetic tapes and hard disk drives allowed for mass external storage of information, which ...

3. USB flash drive - Wikipedia

   en.wikipedia.org/wiki/USB_flash_drive

   A flash drive (also thumb drive, memory stick, and pen drive/pendrive) [1] [note 1] is a data storage device that includes flash memory with an integrated USB interface. A typical USB drive is removable, rewritable, and smaller than an optical disc, and usually weighs less than 30 g (1 oz).

4. Computer data storage - Wikipedia

   en.wikipedia.org/wiki/Computer_data_storage

   Historically, memory has, depending on technology, been called central memory, core memory, core storage, drum, main memory, real storage, or internal memory. Meanwhile, slower persistent storage devices have been referred to as secondary storage, external memory, or auxiliary/peripheral storage.

5. Flash memory - Wikipedia

   en.wikipedia.org/wiki/Flash_memory

   In this regard, NAND flash is similar to other secondary data storage devices, such as hard disks and optical media, and is thus highly suitable for use in mass-storage devices, such as memory cards and solid-state drives (SSD). For example, SSDs store data using multiple NAND flash memory chips.

6. Removable media - Wikipedia

   en.wikipedia.org/wiki/Removable_media

   Paper data storage, e.g. punched cards, punched tapes (now obsolete) Examples of removable media that are standalone plug-and-play devices that carry their own reader hardwares include: USB flash drives [5] Portable storage devices. Dedicated external solid-state drives (SSD) Enclosured mass storage drives, i.e. modified hard disk drives (HDD ...

7. Memory card reader - Wikipedia

   en.wikipedia.org/wiki/Memory_card_reader

   A memory card reader is a device for accessing the data on a memory card such as a CompactFlash (CF), Secure Digital (SD) or MultiMediaCard (MMC). Most card readers also offer write capability, and together with the card, this can function as a pen drive .