翻訳と辞書
Words near each other
・ Memory work
・ Memory, Sorrow, and Thorn
・ Memory-disk synchronization
・ Memory Bank (UK game show)
・ Memory Banks (comic strip)
・ Memory barrier
・ Memory bound function
・ Memory box
・ Memory Boy
・ Memory Bridge
・ Memory buffer register
・ Memory bus
・ Memory card
・ Memory card compatibility chart
・ Memory card connector
Memory card reader
・ Memory cell
・ Memory cell (binary)
・ Memory cells (motor cortex)
・ Memory Chapel
・ Memory clinic
・ Memory coherence
・ Memory configurator
・ Memory conformity
・ Memory confusion protocol
・ Memory consolidation
・ Memory controller
・ Memory corruption
・ Memory Cove
・ Memory Cove Wilderness Protection Area


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Memory card reader : ウィキペディア英語版
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.
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.
Modern UDMA-7 CompactFlash Cards and UHS-I Secure Digital cards provide data rates in excess of 89 MB/s and up to 145 MB/s,〔http://pietrzyk.us/media-card-study/〕 which require memory card readers capable of USB 3.0 data transfer rates.〔http://pietrzyk.us/usb-3-0-cf-card-reader-study/〕

File:SanDisk-memory-card-reader.jpg|USB card readers like this one typically implement the USB mass storage device class
File:Cfcrusb2.jpg|Generic CompactFlash card reader with high-speed storage via USB2.0
File:FDD-Cardreader.jpg|Cardreader combined with floppy disk drive

== See also ==

* Card reader

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Memory card reader」の詳細全文を読む



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