What is Card Reader?
A card reader is a data input device that reads data from a card-shaped storage medium. The first were punched card readers, which read the paper or cardboard punched cards that were used during the first several decades of the computer industry to store information and programs for computer systems. Modern card readers are electronic devices that can read plastic cards embedded with either a barcode, magnetic strip, computer chip or another storage medium.
A memory card reader is a device used for communication with a smart card or a memory card. A magnetic card reader is a device used to read magnetic stripe cards, such as credit cards. A business card reader is a device used to scan and electronically save printed business cards.A best business card reader can work perfectly and means security.
What is Memory Card Reader?
A memory card reader is a device, typically having a USB interface, for accessing the data on a memory card such as a Compact Flash (CF), Secure Digital (SD) or Multimedia Card (MMC). Card readers show different in terms of shape, color, properties, and the like;sim card readers are familiar to us in our cell phones. Most card readers also offer write capability, and together with the card, this can function as a pen drive.
Kinds of Card Reader
Some printers and personal computers have a built-in card reader
A multi card reader is used for communication with more than one type of flash memory card. Multi card readers do not have built-in memory capacity, but are able to accept multiple types and styles of memory cards.
The number of compatible memory cards varies from reader to reader and can include more than 20 different types. The number of different memory cards that a multi card reader can accept is expressed as x-in-1, with x being a figure of merit indicating the number of memory cards accepted, such as 35-in-1. There are three categories of card readers sorted by the type and quantity of the card slots: single card reader (e.g. 1x SD-only), multi card reader (e.g. 9-in-1) and series card reader (e.g. 4x SD only). Some kinds of memory cards with their own USB functions do not need the card reader, such as the Intelligent Stick memory card, which can plug directly into a USB slot.
The USB device class used is 0x08.
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