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.

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Laptop Repair Made Easy

Laptops are also prone to breakdowns and errors. You could be using the world best brands yet a small mistake or fault can shut down your laptop for several days! Though these are expensive, their maintenance can however be inexpensive if you subscribe to an efficient technical support that offers troubleshooting at affordable prices.

The concept of remote laptop repair has worked wonders for those who do not have the time to troubleshoot their laptop or who do not want to follow the instructions given by the technical support over phone. Remote laptop repair makes use of screen sharing technology that helps the support team to view one's desktop through a secure link.
For instance, if your laptop is facing issues of slow performance, by registering with a reputed laptop repair for remote support, you can get your laptop fixed in no time and without worrying about your confidential details. You can attend your official meeting while the tech support team fixes your laptop!

If you are using brands such as Panasonic, Systemax, Samsung, Packard Bell, or Motion computing laptops and are looking for an affordable professional help to rectify your laptop issues, then Ask Laptop Experts can help you with all sorts of software problems. Available at any time and any day, Ask Laptop Experts is a team of certified technicians who can troubleshoot performance and breakdown issues through remote computer support. The team offers technical support at rock-bottom prices via chat, phone and email to users in Australia, Canada, US, Europe, UK and Asia.

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Bad Macbookpro Logic Board? Repairs are Cheaper Than You Think!

When it comes to apple computer repair, there are many different options. There is of course the apple stores. We both understand the price tag associated with repairs done at the apple store. Hence, why you are looking online for a better and less expensive option. There are repair shops out there doing actual apple logic board repairs. Mind you, not a replacement but rather repair of the board in your machine.

Doing a repair this way saves A TON of money. The costs are less because only failed or known to fail components are replaced. Since only the components are replaced there is no need to purchase a complete replacement apple logic board. The only trouble is finding an apple computer repair center that can actually perform this complicated task with precision and in a timely manner, that can fit your buzy time table.

The average logic board repair should run no more than $250 dollars. That is less than half of what the same repair would cost is the apple stores performed it. An added bonus is a smaller family owned shop has less customers and therefore less apple computers to repair logic boards in. This helps contribute to less down time or lack of an apple computer to do your daily internet responsibilities, like apple computer blogging for example.

Always make sure the apple logic board repair for your imac, i book g3, i book g4, i mac, mac book, mac book pro, or even g4 desk top includes testing. There are shops out there that do not test the apple logic boards before they send them back to the customer. This step is CRUCIAL to making sure you do not receive another broken apple logic board in the mail or broken apple computer.


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These days, many IT businesses are incorporating laptops & LCD Monitor desktops into their expertise infrastructure. These lovely & handy laptops allow you to do your work at your own ease even when you are not in your work-place. They attach flexibility and anyplace, anytime access to your business. Moreover, these laptop computers are absolutely useful while traveling. You can be in touch with your business associates anytime as the requirement may be. Not only in work-places, these laptops are fast becoming popular among educational institutions & students.

An ever increasing number of schools are now endorsing the use of laptop computers. But as the saying goes every coin has 2 sides even here there is another side . If anything goes wrong with their functioning, it is exceedingly difficult to get them repaired quickly and at reasonable rates. And in this age no business would want to suffer for lack of dependable laptop repair service centers. We generally are constantly vexed by the question "How to fix a damaged laptop?", then please proceed & read this article in order to get most solutions to your laptop repair related problems. Where can we find the genuine parts? A good place to start is use Google and search on your part number::

That is in case we are looking for do-it-ourselves instructions about laptop or notebook repair? Here we have disassembly manuals, pictures and videos ordered by manufacturer. Which would include the likes of HP, Dell, Sony, NEC, Acer, Ricoh e.t.c.,

Another good source is to do a search on Google as well. Failing that we can call the original manufacturer and find out the cost. Which normally is more than the market rates. Frequently experienced problems in any laptops "believe it or not" are caused by USER ERROR!

One laptop failure that is usually worth repairing is the hard drive. Laptop hard drives have a higher failure rate than desktop hard drives, assumedly because they get bounced around more. The first step to take when working on any laptop or notebook computer is to remove the battery. Even if the power button is well protected, like under the closed lid of the screen, it doesn't mean that the power might not come on due to a mechanical jolt or a short when we are working on the insides, so the best bet is to just get the battery out of there. In some ways, laptop troubleshooting is easier than PC troubleshooting. The basis is that laptops are so highly integrated that many problems you can fix on a PC require replacing the main board of a laptop, Replacing the battery is often a solution to power related problems (though costly) or you may use reconditioned batteries, but repairing the charging circuitry is beyond the average home user. While operating Technicians generally are able to perform system board level repair on laptops, there are not too many problems which they cannot diagnose. Of course, some systems may require a part or component which has over the time become obsolete and that makes some repairs more difficult and time consuming. Some common problems encountered each day are blank screens, systems that don't power on, or turn on then off, systems that cannot charge batteries, ac adapter sockets which are broken and similar problems. I would first look for a local shop that can fix my laptop. If my laptop is older and the screen has either been broken or damaged or just does not switch on it might better considering to replace the entire laptop. Replacing the L.C.D screen can be the most expensive affair of the laptop. And as a matter of fact Most of the companies like Dell, HP lose millions of dollars in replacing these LCD's or charge it on the insurance cover. Therefore it would be highly advisable to use either 3M Protection filters or Privacy filters for these screens as the surface of these screens are vulnerable to punctures, stains & damages.

What these filters do is give an anti-glare coating, protect the surface from getting damaged & give you a privacy feature where-in its only the user who can see the data & not a person sitting next to him, this therefore is an added feature in this fast paced world where information security is so very critical. Also one more thing that we need to always remember is that since laptops help us carry valuable data across different places, companies & countries, we need to protect the unit without compromising on the quality of the laptop case or bag. Laptop cases are no longer simply about getting your laptop from one place to another; you can do that with a plastic grocery bag.

With more people than ever daily toting their computers between the office and the home, the laptop case is now expected to mix sturdiness, protection, style-the ratio of those elements is up to you. And since with the laptop you might have to carry battery charger or other required components, its better to have removable mesh accessory pouch, removable CD/DVD sleeve that holds eight discs, a detachable mobile phone case, and a zip-down workstation. There fore in conclusion, I would like to cite that the advent of Laptop has been a blessing for us, now it is up to us as to how we actually maintain it optimally.

Top 10 Laptop Maintenance and Repair Tips

Laptop has been the hottest gadget being used by all kinds of people regardless of ages. It is a revolutionary technology in the world of computing. For those who are familiar in working with a personal computer, this looks quite simple and as easy as that. But the fact is, laptops are prone to many technical glitches when compared to desktop computers. The better you take care of your laptop, the longer it will last and stay productive with less downtime.

Read the below guidelines to keep your laptop safe against many kinds of problems.

(1) Keep away from dust particles - Dust is one of the bad omens for the laptops. It is advisable to clean your laptops regularly with a soft cloth and not any rough material. Make sure you turn off your laptop for safety measures before cleaning carefully. Do not touch it if your hand is dirty. Avoid chemicals or acids to clean your laptop. You can use a small-tipped vacuum or a can of compressed air to clean it. Always cover your laptop in its bag during non-usage hours to get rid of environmental dusts. Do not forget the saying, "Cleanliness is next to Godliness".

(2) Keep away from liquid and food - Do not eat near any food your laptop notebook. The food particles could occupy the spaces in the keyboard and invite bugs along with its families. This would lead to the worst and frustrating situation. Also the liquids will produce short circuit issues and destroy your laptop.

(3) Keep away from abnormal temperature and weather - Laptops generate more amounts of heat and are capable of adequate thermal tolerances. To take care of it, keep it out of direct sunlight or a bad weather. Do not use laptops in the kitchen. Cover it with the tight laptop bag based on its size while transporting. Do not operate your laptop near any magnetic devices such as microwave oven as this could damage the hard disk.

Overheating is a big issue for all kinds of laptops. To get rid of it and to have the longer run, the above facts have to be incorporated carefully.

(4) Keep a track on manufacturer's manual, guide or their official website - The manufacturer will update all the relevant drivers and you can find all the details such as version number, file size, any patches, defect fixes, troubleshooting etc on their official website. Check the warranty period and preserve all the necessary paper documents to replace or repair if the product is found containing defects.

(5) Defrag the hard disk - Defragging your hard drive is one of the efficient mechanisms in the operating system as the files will usually be fragmented in the hard disk. It will ensure your laptop to run effectively by removing and reducing the unwanted spaces and make the programs run quickly. It is advisable to do this operation on a monthly basis. In Windows XP, you can find the defragmenter tool in the below path: START-> All Programs-> Accessories-> System Tools-> Disk Defragmenter.

(6) Clean the temporary and corrupt files - It is obvious that the internet files will be downloaded to a temporary location and over the period of time, the space consumption of these files rule over the hard disk. It is highly necessary to remove the temp files. To do so, go to (a) RUN-> type TEMP and hit enter. (b) Also try, %TEMP%, RECENT Delete all the files. One or few may not be deleted, not to worry though, as some system files will be in-progress. The sad news is that, there could also be some viruses in this case!

Also use CCleaner, a freeware that works great in deleting the temporary files, internet cache files, cookies and other unwanted or corrupted files in the registry.

(7) Protect against malicious programs - Malware programs are too dangerous that will eat away your data and capture sensitive information such as username, password and send it to the creator. The hall of shame is none other than the hacker or any intruder. Some of the types of malwares are viruses, spyware, adware, trojan, worm, rootkit, keylogger, botnet, backdoor. All are unique and special in its own job of hijacking user's data, playing as a spy and record your activities and much more vulnerable that what you think! These are indeed still the challenging area for all organizations. To protect against these, you should grab a copy of popular anti-virus such as Symantec. Also it is advisable to use Spyware Doctor or Anti Spyware tool to fight against spyware, adware etc. Do not forget to turn on your windows firewall. Update your products such as software, OS regularly to stay up-to-date.

(8) Full Backup - Taking full backups is highly recommended to be on the safer side of the journey. Data is really precious to all. Though other protection measures are taken, data backup is considered as an inevitable task. Try using Norton Ghost to backup the complete data in your hard drive. It would be beneficial if the System Restore option is turned on to revert back to earlier stage in the case of any issues.

(9) Security measures - Have a safety lock for your laptop. Try to use advanced login facilities such as face recognition, thumb impression recognizer such that if the laptop goes to the enemy or wrong user, the data can be preserved.

(10) Other safety measures - If you are not comfortable with touchpad, opt for a separate optical/wireless mouse. Keyboards are too fragile when compared with personal computer's keyboard and hence use gently.

What's more? Smoking is not only injurious to health but also for its surroundings! These chemicals accumulate more and more in the meager areas and affect the health of the laptop.

In desktop computers, every possible problem can be seen by uncovering it. In the case of laptops, it is too risky to uncover it as the spare parts are sensitive and fragile when compared to the pc. You have to hire the professionals to solve hardware issues, LCD screen, motherboard, power problems, RAM memory, hard disk, OS up-gradation etc.

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Apple MacBook Pro 13" (2016): Unboxing & Review

In-depth unboxing and review of the all-new Late 2016 13-inch MacBook Pro in Space Gray. Includes a comparison to the previous MacBook Pro and MacBook Air. Stay tuned for the review off 13" and 15" MacBook Pro with TouchBar and Touch ID. Enjoy! Specs as Tested - $1,499: CPU: Core i5 Dual 2.0Ghz GPU: Intel Iris Graphics 540 RAM: 8GB 1866MHZ Storage: 256GB PCIe ▶Subscribe: http://goo.gl/UEhJs ▶Facebook: http://www.facebook.com/DetroitBORG ▶Twitter: http://www.twitter.com/DetroitBORG ▶Google+: http://goo.gl/mHsOmH ▶Instagram: http://www.instagram.com/DetroitBORG source For apple macbook pro repair, do visit PC Dreams Singapore.

Apple MacBook 12-inch (2016): Unboxing & Review (All Colors)

 Apple's 2016 MacBook adds faster Intel Skylake Core M CPUs, Intel HD 515 graphics, 1866MHz LPDDR3 RAM, faster SSDs, a bigger battery, and Rose Gold. This video looks at all 4 colors and both stock configurations and compares them to the previous generation. Thanks for watching! Subscribe: http://goo.gl/UEhJs Facebook: http://www.facebook.com/DetroitBORG Twitter: http://www.twitter.com/DetroitBORG Google+: http://goo.gl/mHsOmH Instagram: http://www.instagram.com/DetroitBORG source For apple macbook pro repair, do visit PC Dreams Singapore.