Top Flash
Compact Flash Memory and Data Recovery
Flash memory gets its name due to its microchip arrangement in such a way, that its section of memory cells gets erased in a single action or "Flash".
Both NOR and NAND Flash memory were invented by Dr. Fujio Masuoka from Toshiba in 1984.The name 'Flash' was suggested because the erasure process of the memory contents reminds a flash of a camera, and it's name was coined to express how much faster it could be erased "in a flash". Dr. Masuoka presented the invention at the International Electron Devices Meeting (IEDM) held in San Jose, California in 1984 and Intel recognizes the potentiality of the invention and introduced the first commercial NOR type flash chip in 1988, with long erase and write times.
Flash memory is a form of non-volatile memory that can be electrically erased and rewrite, which means that it does not need power to maintain the data stored in the chip. In addition, flash memory offers fast read access times and better shock resistance than hard disks. These characteristics explain the popularity of flash memory for applications such as storage on battery-powered devices.
Flash memory is advance from of EEPROM (Electrically-Erasable Programmable Read-Only Memory) that allows multiple memory locations to be erased or written in one programming operation. Unlike an EPROM (Electrically Programmable Read-Only Memory) an EEPROM can be programmed and erased multiple times electrically. Normal EEPROM only allows one location at a time to be erased or written, meaning that flash can operate at higher effective speeds when the systems using; it read and write to different locations at the same time.
Referring to the type of logic gate used in each storage cell, Flash memory is built in two varieties and named as, NOR flash and NAND flash.
Flash memory stores one bit of information in an array of transistors, called "cells", however recent flash memory devices referred as multi-level cell devices, can store more than 1 bit per cell depending on amount of electrons placed on the Floating Gate of a cell. NOR flash cell looks similar to semiconductor device like transistors, but it has two gates. First one is the control gate (CG) and the second one is a floating gate (FG) that is shield or insulated all around by an oxide layer. Because the FG is secluded by its shield oxide layer, electrons placed on it get trapped and data is stored within. On the other hand NAND Flash uses tunnel injection for writing and tunnel release for erasing.
NOR flash that was developed by Intel in 1988 with unique feature of long erase and write times and its endurance of erase cycles ranges from 10,000 to 100,000 makes it suitable for storage of program code that needs to be infrequently updated, like in Digital Camera and PDAs. Though, later cards demand moved towards the cheaper NAND flash; NOR-based flash is hitherto the source of all the removable media.
Followed in 1989 Samsung and Toshiba form NAND flash with higher density, lower cost per bit then NOR Flash with faster erase and write times, but it only allows
sequence data access, not random like NOR Flash, which makes NAND Flash suitable for mass storage device such as memory cards. SmartMedia was first NAND-based removable media and numerous others are behind like MMC, Secure Digital, xD-Picture Cards and Memory Stick. Flash memory is frequently used to hold control code such as the basic input/output system (BIOS) in a computer. When BIOS needs
to be changed (rewritten), the flash memory can be written to in block rather than byte sizes, making it simple to update. On the other hand, flash memory is not practical to random access memory (RAM) as RAM needs to be addressable at the byte (not the block) level. Thus, it is used more as a hard drive than as a RAM. Because of this particular uniqueness, it is utilized with specifically-designed file systems which extend writes over the media and deal with the long erase times of NOR flash blocks. JFFS was the first file systems, outdated by JFFS2. Then YAFFS was released in 2003, dealing specifically with NAND flash, and JFFS2 was updated to support NAND flash too. Still, in practice most follows old FAT file system for compatibility purposes.
Although it can be read or write a byte at a time in a random access fashion, limitation of flash memory is, it must be erased a "block" at a time. Starting with a freshly erased block, any byte within that block can be programmed. However, once a byte has been programmed, it cannot be changed again until the entire block is erased. In other words, flash memory (specifically
NOR flash) offers random-access read and programming operations, but cannot offer random-access rewrite or erase operations.
This effect is partially offset by some chip firmware or file system drivers by counting the writes and dynamically remapping the blocks in order to spread the write operations between the sectors, or by write verification and remapping to spare sectors in case of write failure.
Due to wear and tear on the insulating oxide layer around the charge storage mechanism, all types of flash memory erode after a certain number of erase functions
ranging from 100,000 to 1,000,000, but it can be read an unlimited number of times. Flash Card is easily rewritable memory and overwrites without warning with a high probability of data being overwritten and hence lost.
In spite of all these clear advantages, worse may occur due to system failure, battery failure, accidental erasure, re-format, power surges, faulty electronics and corruption caused by hardware breakdown or software malfunctions; as a result your data could be lost and damaged.
Flash Memory Data Recovery is the process of restoring data from primary storage media when it cannot be accessed normally. Flash memory data recovery is a flash memory file recovery service that restores all corrupted and deleted photographs even if a memory card was re-formatted. This can be due to physical damage or logical damage to the storage device. Data even from damage flash memory can be recovered, and more than 90% of lost data can be restored.
About the Author
Bharat Bista
Digital Image Recovery
eProvided.com
Bharat Bista is an Independent SEO consultant, specializing in Search Engine Optimization and eCommerce. In addition is a professional business article writer in compound subjects.
how do I put a flash banner on top on a myspace?
okay, so I worked on a banner in flash cs3 pro for hours now and I finally got it finished now how do I add this to the top of my myspace page (standard profile)
Use this to do that.
http://xiii.us/eGen/topB.php
Top Flash
BEST Flash Mobs of ALL TIME -- BOAT 1
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American DJ Flash Tube $104.99 American DJ Flash Tube 5 foot tube, 4 lamps, high speed flash strobe tube. Use in multiples. Includes Mounting Brackets Features: Flash Tubes™ have a top speed of 140 m.p.h. creating a dynamic strobe effect when used in multiples Forward and reverse control Audio activation All flash function Designed for indoor or outdoor use Flash Tubes™ connect end to end: Requires terminator and Flash-front for each branch and one controller for each system Dimensions: 3.25" x 3.25" x 60" Weight: 3 lbs. 120V or 220V operation Get Your American DJ Flash Tube Today! |
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Transcend 4GB Flash Module $60.99 0.28" 0.39 oz 1.06" 2 Year 2.40" 4 GB 4GB Flash Module 50Pin Vertical Supports 50nm Flash Built-in ECC functionality ensures highly reliable data transfer 4GB Flash Module Power Cord Transcend's IDE Flash Module is specially designed for use in the demanding industrial environments where industrial PCs, Set Top Boxes and other computer systems must operate. IDE Flash Module is a convenient and easy to use solution for expanding an industrial computer's memory capacity. Flash Drive IDE Internal RoHS TS4GDOM40V-S Transcend Transcend Information, Inc Yes www.transcendusa.com |
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Transcend 512MB Flash Module $27.99 0.28" 0.39 oz 1.06" 2 Year 2.40" 512 MB 512MB Flash Module The S series support 50nm Flash 40Pin Vertical Built-in ECC functionality ensures highly reliable data transfer 512MB Flash Module Power Cord Transcend's ISet-Top Boxes and other computer systems must operate. IDE Flash Module is a convenient and easy to use solution for expanding an industrial computer's memory capacity. Flash Drive IDE Internal RoHS TS512MDOM40V-S Transcend Transcend Information, Inc Yes www.transcendusa.com |
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Flash Gordon [Blu-ray] $8.78 Heroic earthling Flash Gordon saves the world from the nefarious Ming the Merciless in this lavish, intentionally campy adaptation of the famous sci-fi comic strip. The story is as basic as space operas get: Ming (Max von Sydow) has developed a plan to destroy the Earth, and Flash (Sam J. Jones) and his attractive companion, Dale Arden (Melody Anderson), are called upon to stop him. Along the way, Flash must battle Ming's goons and the temptations of a luscious space princess. Previously the basis for a more straight-faced 1930s adventure serial, Flash's story is mined here for exaggerated, cartoon humor by screenwriter Lorenzo Semple Jr., a central figure in the similarly campy '60s Batman television series. The simplistic plot mainly serves as an excuse for spectacular sets and cartoonish action sequences, all set to an appropriately over-the-top rock score by Queen. Certainly not a film to turn to for serious excitement, fine performances, or character development, Flash Gordon has nevertheless developed an appreciative cult of fans who admire the film's humorous approach and the detailed, colorful production design. ~ Judd Blaise, Rovi |
Buy or Sell Flash Files
You must have, while surfing and browsing for your search through different websites, come across a really spellbinding Flash animation on a website and wonder how could it be achieved for your website?
You must have just stumbled upon your friend’s website and were surprised to see a stunning Flash animation making his site more dynamic than it was ever. So far as you know your friend doesn’t know this good Flash animation, then how could he come by this brilliant Flash work? Don’t envy, get even. Here I tell you what your friend has done and how you too can tint your website with Flashy buttons, images and banners to woo your visitors.
Flash animation adds attraction and interaction to your website. Flash files make your site dynamic in real terms. Flash animators are playing wonders by designing very unique and interactive Flash designs round the globe.
Flash files are easy to integrate in your website and play on their own. It doesn’t require much effort to add a Flash file to your website, but designing one really does. Nothing to worry, there are many on-line Flash files market place that offer you extremely beautiful, purposeful and interactive Flash animations of all sizes and shapes at a price as low as $1.
How to buy a Flash file for your website:
Just explore the Flash files trading websites on net, browse through their huge collection of Flash animations and if you find a really picking one for your website just download it by completing the procedure. A Flash file would hardly cost you afew dollars and it’s yours. Just add it to your website like any other file you do and see the magic.
You should definitely be choosy while selecting and buying a Flash file for your website, it should be serving the purpose, should suit the size and color of your page. If it doesn’t, do not compromise, keep searching, you would definitely get one.
How to Sell a Flash file and earn money:
Are you an Flash designer or a Flash animator? Are you fond of creating unique Flash files and Flash animations? Do you know this of your hand practice can earn you good bucks?
Yes, Flash animators and Flash designer, whether experienced or fresh one, all can earn good money be selling their Flash files on-line at any Flash file market place. All you to do is upload your Flash files, fill relevant information and it is on sale. You can decide the price of your file and start earning money instantly. Now every time a buyer buys your design, you get paid for your Flash file. It has huge earning potential. It’s really as simple as that.
How to earn money by selling Flash files on your website:
Do you have a website? Does it earn good money for you? Do you want to earn more money from it?
Your website can earn you good money by selling Flash files on it. Yes, even when you do not know Flash-designing, and do not have a single Flash file to sell. How come?
All you have to do is become an associate member of any Flash file seller website and sell their wares on your website. Every sell you make from your website will earn you a handsome commission. You can earn as high as 50% of the sell-value of sold Flash file. The wonderful thing is, you do not have to take do anything to earn this extra income. Visitors on your site would automatically be diverted to the seller’s site and all is there headache.
About the Author
For more details about flash and flash files.
