What is the card reader used for?

A card reader is a card reading device. Since there are many types of cards, the meaning of a card reader covers a wide range; according to different card types, it can be divided into IC card readers. Including contact IC cards, following the ISO7816 interface standard; non-contact IC card readers, following the ISO14443 interface standard, long-distance card readers, following the ETC national standard GB20851 interface standard.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is the card reader used for?

Card Reader is a card reading device. Since there are many types of cards, the meaning of card reader covers a wide range.

According to different types of cards, they can be divided into IC card readers, including contact IC cards, which follow the ISO7816 interface standard; non-contact IC card readers, which follow the ISO14443 interface standard, and are long-distance The card reader follows the ETC national standard GB20851 interface standard.

The interface of memory cards is not uniform. The main types are CF card, SD card, MiniSD card, SM card, Memory Stick card, etc.

RFID electronic tag reader is called a long-distance card reader. For example, in the ETC system, it can read and write vehicle-mounted IC cards within 10m.

Memory cards are widely used in smartphones and cameras. Broadly speaking, smartphones and cameras have also become card readers. According to the type of memory card, it is divided into CF card reader, SM card reader, PCMICA card reader and memory stick reader/writer, etc. There are also dual-slot card readers that can use two or more types at the same time. Card; according to port type, it can be divided into serial port card reader, parallel port card reader and USB card reader.

Advantages

Compared with other methods, using a card reader can achieve higher reading speed, and file access is not restricted by file type. The plug-and-play method itself is much more convenient. [1]

Disadvantages

Internal card readers, under the Windows operating system, will leave a lot of empty "removable disks" in the computer , increasing the inconvenience in daily use. (But now Windows Vista and Windows 7 have solved this problem, that is, the corresponding "removable disk" will only be displayed when the memory card is inserted, and the corresponding "removable disk" will disappear immediately after the memory card is removed). The external type eliminates this problem, but it requires a USB socket.

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