You could have used Different Words > 자유게시판

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

Many laptops and cellular devices you should buy immediately have constructed-in slots for Secure Digital memory cards, normally simply called SD cards. An SD card is a storage device that has many helpful options depending on how and where it's used. You possibly can add an SD card to a small machine, like a cell phone, to increase the storage house available for ringtones, texts, apps, music and different information. When one SD card in your digicam fills up with images and movies, you possibly can swap it out for an empty SD card as an alternative of deleting any information. It can save you files to an SD card to switch them between devices or Memory Wave give them to another person. SD cards conform to requirements developed and maintained by the Secure Digital Association. Panasonic, SanDisk and Toshiba formed the SD Association in January 2000 with the objective of growing and selling standards for flash-Memory Wave Workshop storage. SanDisk's expertise, already a world chief in flash memory products, turned a template for the new standards., the SD Association would not make or market any products on its own.

Nevertheless, greater than 1,000 association members, primarily main electronics manufacturers worldwide, at present contribute to the continuing enhancements in SD requirements. These requirements cowl the SD playing cards themselves, as effectively because the hardware and machine drivers used to learn and write to them. You could have used other phrases, akin to memory playing cards or flash memory, to explain SD playing cards in dialog. The phrase memory, nonetheless, is perhaps misleading to some folks since it is also used to speak about Random Entry Memory (RAM), which serves a very different goal in computing. The word flash describes the means during which the info is saved onto the strong-state materials inside the SD card, which you'll be able to read about in How Flash Memory Works. Right here, we'll use the term SD card since we're talking of a flash-memory gadget that conforms to the SD standard and sports activities the SD Affiliation's trademark. In this article, we'll zoom in on SD's varied kind factors, capacities and speeds and take a look at the features, advantages and challenges of Safe Digital playing cards.

Let's begin with the forms of SD playing cards accessible right this moment. However there are a few completely different form factors. 32 x 24 millimeters, 2.1 millimeters thick - That is the commonest measurement you may see. This measurement has 9 pins and features a write-safety switch on one side to toggle between learn-only and browse-write states. 20 x 21.5 millimeters, 1.4 millimeters thick - This is the "mini" version with eleven pins, and it is less widespread than the opposite two sizes. 15 x eleven millimeters, 1 millimeter thick - This is the "micro" model with eight pins. Because it is so small, this measurement has become popular in mobile units like smartphones. It's not simply the bodily make-up of the card that is standardized. SD playing cards additionally come in numerous capacities. To learn and write knowledge to the card, Memory Wave you will want card-reader hardware that can handle each the dimensions factor and the capability class indicated.

Also, if you are using a mini- or micro-size card however have the big-dimension reader, you may insert the smaller card into a special adapter in the form of the larger card. Some SD card manufacturers even promote microSDHC playing cards together with SDHC-sized adapters to make it simpler to maneuver the playing cards between gadgets. This is where you must be cautious. For instance, when you've got an older digital digicam that takes SD format playing cards, an SDHC card won't work, even when it suits into the digicam. Verify your hardware specification to seek out out what capacity formats your system helps. Then search for cards that includes the SD logos that correspond to the capacity-size mixture you need. You may see all these logos at the SD Association Net site here. As well as to these SD card types, there's one other classification you might need to know when buying an SD card: its velocity. Next, let us take a look at what activities require larger SD card speeds and the way the SD Affiliation classifies cards by speed.

Speed isn't essential if you're simply storing information or taking nonetheless images. Nonetheless, speed is very important in the case of shooting and taking part in back video, particularly in high-definition (HD). When you have got a better speed SD card, you possibly can capture better high quality video with smoother playback. The SD Affiliation has two requirements associated with velocity: Velocity Class and Ultra Excessive Speed (UHS) Velocity Class. These two requirements usually are not compatible, so make certain to make use of the usual applicable in your recording machine. Let's take a more in-depth have a look at each class and how to determine what speeds an SD card is able to. You will see the Velocity Class for an SD card subsequent to its SD emblem as a quantity inside a circular "C" form. The Extremely High Pace (UHS) Pace Class is obtainable in SD playing cards that characteristic the UHS-I bus-interface. That means the SD card has circuitry designed to read and write to memory at speeds as much as 312 MB per second. A UHS SD card packaging may function the Pace Class plus an extra class, written as a quantity inside a "U" shape. On the card itself, although, the UHS Velocity Class is denoted by the Roman numeral "I" to the right of the SD logo. Can you employ that slot for different things moreover flash memory?