The World Of Advancing Computer Memory

The development of static and dynamic RAM integrated circuits followed swiftly in the late 1960s and early 1970s. Compared to the relays and vacuum tubes used for computer memory function prior to the development of the magnetic core memory models, the advancement created a more user friendly experience as well as an increase in the amount of memory a computer could be expected to produce. This precursor to the common personal computer revolutionized the technological world since it made it possible to begin to see the advantages of the computer for personal use instead of being seen and used only in business operations. The computer systems of today boast a hierarchy of memory that includes CPU registries, SRAM caches, external caches, DRAM, and swap space among others. This is often referred to as RAM, but it actually defies the original concept of true random access memory and does not hold the same intent as the original magnetic core memory from which RAM was born. The methods utilized by the pool of memory in today’s computers often sequence through various subsystems with different access times in layered sequential order to allow the illusion of instantaneous response times. Generally, the computer accesses its memory in order of speed with the slower forms of memory being the last to be drawn from when a command is given to the computer. RAM now has methods of upgrading that allow for even greater memory capacity if there is a need to change the amount of RAM a computer has based on the amount of RAM used by the operator on average, these are usually in the form of DRAM and come in the form of memory modules. A few sticks of chewing gum are comparable in size to the memory modules in terms of physical size. These modules can be replaced quickly in the case of damage or should the amount of memory need to be increased again at a later date. Small amounts of RAM, most commonly SRAM, are also found in other locations on the computer, such as the mother board or the hard drive. Developers are currently investigating the possibility of non-volatile RAM. This would be another huge step in computer memory as these new forms of RAM would allow for the preservation of data upon the loss of power. Currently, RAM is a volatile memory form and will lose information if an interruption of power occurs. Carbon nanotubes offer promising results in this field of RAM development, but no non-volatile RAM has been released for public use yet. All of the developing technologies under this direction of RAM are pre-beta stage at present. MRAM has seen some success with the release of several chips that have undergone extensive testing. The core technology of MRAM depends upon the concepts of the magnetic tunnel effect and is promising to turn the world of computer memory onto the pathway of the future as a result. In 2004, Solid state drivers became available. Bases on flash technology, these drivers have a capacity exceeding 150 GB. These drivers also have speeds that far exceed the speed of traditional disks. In short, this means that the lines between RAM and disks have blurred and there is less difference between the two in performance. With each passing year, memory capacity grows. New technologies revolutionize the way we think of computer memory and how we use that memory once it becomes available. It is expected that computer memory will only continue to increase and evolve as our world becomes more technologically advance.

Four Option for Computer Data Recovery

Maybe almost all computer user has had experience of having their PC crash or hang, and sometime that problem make your data gone, so maybe you will lost your email, your mail contact address, your document and all the important file. So here the option for your consideration, to prevent your data being lost :

1. Check the components hardware. Occasionally a computer data recovery effort will not even be required at all. While it might seem like a hard drive has crashed, another component may be to blame. For example, the mother board or power supply might be faulty. Therefore, it makes sense to check these things before writing off the hard drive. If it’s unclear that these parts might be to blame, enlisting professional help might be in order.

2. Repair Operating System. If a your computer will still not boot up, computer data recovery in this case might require repairing or replacing corrupt core operating system files. To do this, follow to repair the OS.

3. Data recovery software programs. If the operating system or hardware issues are not blame for the failure and the computer will still boot up, a computer data recovery disk might help restore missing or accidentally deleted files. There are programs available from computer shops and online that are specifically designed to help with data recovery efforts.

4. Professional data recovery services. At now many companies that specialize in computer data recovery. They have the necessary hardware and software tools required to be able to recover files that individuals will not have at home or in the office. While these services can be costly, I’m sure that if your data is restored, you’ll agree that the expense is worth it. Beyond regular computer professional services that specialize in data recovery, computer forensics companies might be able to help out in extreme cases (for example, computers damaged in the case of fire or flood).

Computer data recovery is possible even when a hardware crash or failure has occurred. While the results will vary depending on the severity of the crash, the cause and the methods used, it is possible to retrieve files and data off of even the most severely damaged of hard drives.

Short explaining about BIOS

BIOS abbreviation for  basic input/output system, is a firmware code that a PC runs at start up to identify and initiate component hardware. This enables the PC to allow software programs to load, execute, and run for user use. More commonly known as booting up, BIOS simply enables a computer to work for the user in a capacity that is expected. It is referred to as memory only because it usually resides embedded within chips which use ROM as a main memory function. Part of the non-volatile memory formats, BIOS is not lost due to power loss or shut down.

In the beginning, BIOS chips could not be altered because of their placement on ROM and PROM memory. Then, the BIOS moved to EEPROM and flash, giving it more functionality than had been previously seen. The EEPROM gave the user the ability to easily change and update the BIOS. Manufactures issued updates to help users improve compatibility and remove bugs that were often troublesome to the applications in question concerning the BIOS in the same manner that updates are offered for many applications and hardware components of a PC. Since the issuance of these updates ran the risk of destroying a computer if the updates were interrupted by the user or otherwise, manufacturers altered the BIOS to include a block that must run separately and be upgraded before the rest of the blocks. This fix seems to have reduced the risk to computers while upgrading BIOS nicely.

As BIOS is flash-based, it shares the same risks that other flash-based memory experiences. Flash can only be rewritten a finite number of times before becoming unusable. Flash-burn viruses that occur after too many rewrites on the flash device will result in permanent corruption and the BIOS will be unable to be salvaged. The only true way to avoid having this happen is to replace the flash driven BIOS with a ROM based BIOS.

While some older, less sophisticated operating systems accessed the BIOS chips within the personal computer directly, more advanced systems access the BIOS indirectly. The main reason is that it is inefficient with today’s more complex and faster technologies. Accessing the BIOS directly can seriously delay speeds which are valued in today’s business and personal worlds.

If a process in the boot series of execution occurs from BIOS due to a forgotten disk in left in the hard drive, a user will get an error message. The message may vary from operating system to operating system, but all error messages will have one common fix. Simply remove the forgotten disk from the hard drive and reattempt your boot. The reason for this is that BIOS can accidentally attempt to boot your computer from incorrect files if such an occurrence as a forgotten disk is present. By removing the interfering disk, such as a floppy or installable application disk in your hard drive, and rebooting the computer after removal of the offending software, BIOS can continue the process without confusion.

No computer can run without BIOS. It is an integral part of unseen system checks that occur when the computer is started. If the system cannot check itself for possible problems and have its commands properly executed by BIOS, then the computer will halt booting executions. Based on this, and the knowledge that BIOS is generally flash based (although it can be ROM based), if your computer refuses to start, you may want to have your BIOS chips examined by a professional.

Tips and Tricks to optimize notebook battery usage

Some facts are often found on notebook batteries for notebook users Many people think that plugging the charger when using notebook with installed battery condition is good, because there notebook protection circuit that automatically decide when battery power is full. But it was not like that, this is the reason.

1. The main enemy of lithium batteries is overcharge. Although the notebooks now have intelligent circuit that stops charging when the battery is full, but when the battery is reduced again (because he used) will automatically back up to full charge again, and will be repeated. The problem is, in fact after a full he will not immediately end, but still had few seconds until minutes before the circuits actually work to decide the flow of charging. At the time this happens overcharge, if this happens repeatedly assured battery will drop quickly

2. The second enemy is the life cycle of lithium. Lithium batteries have a certain life cycle where each time a charge capacity will be less and less. We charge an automatic circuit breaker working (short-circuit because it is full charge, then automatically refilled when the battery is not full), Charge the battery from 99% to 100% was considered tantamount to fill from 1% to 100% or 20% to 80%, so intelligent charging circuit here instead become a boomerang, because it will reduce the remaining life cycle of the battery.

3. When the battery charged and in use at the same time, the heat released will be greater because there are two conditions of energy processes. Heat generated can hardly seemed to feel depending on the type dekali notebooks, and we know overheating is one of the main enemy of electronic devices. Use notebook with battery and charger installed simultaneously and continuously, confirmed 1 / 2 years the battery capacity you will be able to drop the remaining live 1 / 2 its just the initial capacity. And not until the year your battery can only hold power 5-10 minutes before the notebook out. Indeed lithium batteries. Although not in use, every year its capacity will drop by itself about 25% of initial capacity when he made (normally do this kind), but there are so cara2 durable notebook battery discharged 2 even 4 years old, with a record capacity must be reduced, but still reliable.

How to use the right notebook battery.
1. How to compromise: Charge the battery up to 95% of (not necessarily 100%), use up the battery going down 5-10% depending on the type of notebook, there is a notebook that 15% had wanted to die (the big notebook and thirst for power) is also a 5% still good (netbook). New plug charger while in use anymore. Remember when you want the full (95% of) off charge it again.
2. The way a little trouble: Just like above, only when the notebook will be in charge, notebook standby / power off / not used, fitted’ve lights green / full off the charger. Here intelligent circuit are usually working right, so it does not happen disconnect and recurring charge (because he used) which causes a decrease in battery life.
3. How to repot. Turn off the notebook, sampe charge the green light signal, off the charger, remove the battery and store in a bag. Pake notebooks via UPS’ll be safe. Travel longer fit the new battery installed. This method can not be used for the type of notebook battery built in (example: Macbook unibody).

Macrium Reflect Free Edition – An award winning disk imaging solution for free

Create an exact image of partitions on your hard disk for easy hard disk upgrade or complete/partial system recovery. An award winning disk imaging solution for free. A complete disaster recovery solution for your home and office. Protect your personal documents, photos, music and e-mails. Upgrade your hard disk or try new operating systems in the safe knowledge that everything is securely saved in an easily recovered backup file. Macrium Reflect supports backup to local, network and USB drives as well as burning to all DVD formats. Free edition is Pfor personal/home use only. Version 4.2 build 2098 may include unspecified updates, enhancements, or bug fixes. Free. No limitations. Windows 7, Vista, Server 2003, 2008, XP; 32 and native 64 Bit. This installation file contains the 32 and 64 bit versions of Macrium Reflect. The correct version will be automatically installed. – Macrium.com

CNET editors’ review – Backing up your computer shouldn’t be a tedious task. Macrium Reflect Free Edition makes file backup incredibly easy thanks to its intuitive user interface and helpful wizards. Installing the program did confuse us a bit, because although it’s a free program, it refers to purchasing the program, and you’re given a confirmation number. On top of that, the program recommends that you view the online tutorials before getting started, but you might have some trouble deciphering them unless you speak Italian. Luckily, the built-in Help menu is more than adequate and written in English. The user interface is simple but professional in appearance. Intuitive commands line the top of the window, and tabs reveal options for disk images, partitions, XML definitions, and scheduled backups. A helpful wizard guides you through the process of setting up your backup. We were able to quickly select our backup location (local hard disk, network, CD/DVD). Before proceeding, it provides you with a summary of your backup so that you can see the backup type, destination, compression type, and password protection. Here is also where you can make advanced configurations to the compression levels and file sizes. The program did slow our computer while it worked its magic, and we were unable to browse or work with other resource-intensive programs at the same time. However, we were able to watch the backup process, and the program successfully backed up our C Drive without a hitch. If you’re looking for a simple but reliable backup program, we highly recommend Macrium Reflect Free Edition to all users. – Download.com

Download Macrium Reflect Free Edition at Download.com
http://download.cnet.com/TSA/3000-2242_4-10845728.html

What A Server Cabinet Is Used For

All Network Administrator will be familiar with server cabinets, the purpose of a server cabinet is to ensure the servers are kept cool, stored in way that it is accessible for installations and maintenance, and help to reduce noise output.

Think of like a bunch of servers all stacked up onto each other, then enclosed in a state of the art server cabinet. These can be seen in many businesses, security offices and computer companies in a separate room or server cupboard. Server cabinets are typically available in a standard 600mm to 800mm width, and 900mm to 1000mm depth. They can also be available with a secure locking system, so the servers will be secure from theft and vandalism.

The cabinets can come in a variety of shapes and sizes, so you are able to fit the desired amount of servers in one cabinet. Co-Location server cabinets allow users to share between each other, further allowing good management of the cabling for maintenance and commissioning. The servers can be accessed through a doorway access from the front or the rear of the cabinet. These can also come open top, sliding side panel, mesh or glass front door and mountable profiles.

Most good quality and strong cabinets can be typically found in large data centres (purposely built for holding masses amount of data onto different servers), in which some cabinets are now able to cool the systems down without having a dire impact on the environment. Traditional cooling methods use a fan, which uses up a lot of energy. Newer methods involve a liquid cooling method as opposed to a fan. Using air conditioning tends to use up more energy in year than any other energy consumption devices.

Using a cabinet liquid cooling device is much more expensive than using air conditioning and fans, however, they are far more effective and beneficial than traditional methods for reducing carbon footprint emissions. Another way of being energy efficient in server rooms and data centres is through good cable management. Stray cables could easily restrict cooling vents and ducts. This reduces energy costs and ensures energy efficiency.

Even though they appear somewhat unessential to certain establishments, they are one of the most important features for many server rooms and centres. They help to keep every server in its place and prevent a disorganised maintenance facility.

Optimizing Your Computer’s Memory Potential

Think about the Internet as a highway and your computer is constantly traveling it. Add to that the trips your computer makes when working with applications that are not internet based, and you can rack up some considerable mileage that can result in computer problems if you don’t tune it up a bit every now and again.

In the dawn of the computer age, the proverbial geek took care of the necessary operations to help maintain a computer. Of course back then, by default, only geeks had computers. They were not household items in those days and only those who understood them better than they understood other humans had them. These geeks tweaked and optimized those early computers in an almost secretive manner-only because there was little contact outside of geek and computer relationship.

However, times have changed. Computers are in almost every home, in schools, and in the workplace. There isn’t a large enough geek population to assign a personal one for each computer to come and optimize yours when it needs a tune up. The need for keeping up with maintenance hasn’t evaporated though, and ignoring your computer’s need for optimization can result in noticeably slower running times or a computer that may refuse to work at all.

Since your computer didn’t come with its own personal geek, let’s learn a little about optimizing your electronic friend. First, start with creating a restore point. There is always the chance that something can go wrong and you could accidentally lose more data than you intend to if you don’t have a backup point. Many computers have this application included just in case you forget to do it. Some computers even create restore points periodically so that you have a way to undo whatever mistake you made even if you had no clue that your action would create a problem.

Create a backup of any documents you don’t want to lose on the same precautionary basis as the restore point serves. It never hurts to have a couple of ways to ensure that you can undo what you did if you need it. You can do this by simply burning the documents onto a storage disk such as a CD or a DVD.

Now, run a defragmentation on your computer. This can take a while if you haven’t done one regularly. It should be an option in the optimization options on your computer. Once it is done, take a click over to your antivirus software. Many of these have tools to help you optimize your computer. I know my antivirus program automatically tunes up my computer once per week. It keeps my system running as well as it did right out of the box.

Finally, delete any documents or programs that you don’t need. Just as keeping trash in your apartment takes up space, so do these documents on your computer’s memory. Don’t forget to empty your recycle bin after you’ve finished as nothing is deleted fully and no memory is freed up until that is done. This just opens up more room for your computer to do its thing.

6 Steps to the Perfect Computer Room

As more and more businesses rely on computers for the day to day success of their business, businesses are packing more computers in to offices, so that each member of staff has a PC and is truly efficient.

This is excellent, as the businesses are investing in the Technology, but eventually these businesses will discover they computers begin to run slow, then stop! The reason being, most organizations, do not invest in the actual computer room, this is the room dedicated to accommodating the servers and where the network infrastructure is terminated. It’s just the same as having a Formula 1 car and putting standard unleaded fuel in it, it will run but the performance will be no were near what it should be.

An independent survey illustrated this, by poling 50 top UK manufacturers, only 16 had a dedicated Computer Room, that had the relevant security in place to protect their investment, 3 used what you would call a cupboard to house the main server. One in particular stored the server in a room 3 feet x 4 feet, with the monitor balanced on the server while the keyboard was on the floor and this was a leading Global manufacturer worth over $5 billion!

To build the ideal Computer Room, you will need:

1. An access control solution. This can be a simple keypad entry system set a 4 digit access code and press the digits to gain access, or a more complete swipe card system, that logs each entry in to the room and sends an email to the Network administrator when someone tries to gain access when they don’t have the necessary privileges.

2. A false floor or suspended ceiling, either one of these are necessary for both structured cabling that runs the army of computers in the offices and air conditioning for cooling of the servers, to ensure the servers don’t crash.

3. KVM switches, these are the devices that can be used to monitor banks of servers from a single monitor and keyboard. KVM stands for Keyboard, video and mouse. The switches can be daisy chained together so that they can control and manage up to 345 servers per monitor, keyboard and mouse. These switches have a fantastic ROI, as they save money on the monitor, keyboards and mice that the business would purchase, as well as the extra expense of increased air conditioning to reduce the heat from the monitors and most importantly save a huge amount of space.

4. Storage of the servers. There are 2 types of storage, rack mount cabinets for rack mount servers and open LAN racking units that store free standing servers, monitors and keyboards etc. These units can be arranged, so they store 20 free standing servers with 1 monitor, KVM switch and keyboard controlling them, they are modular and more flexible for the ever expanding computer room and most importantly the most cost effective solution.

5. Air conditioning: If you have ever been in a computer room when 40 servers have been running for 2 hours, you will know how much cooling they require and this is paramount!

6. Structured cabling: These are the cables that connect each computer and if you were to trace each cable, they would run back to the computer room and to the server. These are normally classified as Category 5e or Category 6 data cabling and there are many Global manufactures of data cabling solutions.

Undelete Files With Confidence

It happens all of the time because nobody is perfect. It’s so easy for anyone to get distracted and accidentally delete an important file. I know plenty of people who’ve done this, including me. Here is the most important thing to remember: Undeleting files has a very high probability of success, but it depends on whether some other data has overwritten the file you need to recover. Running undelete or getting a recovery expert is the only ways to find out. You may be wondering why you just can’t you just look inside the recycle bin on your desktop and use the search function in the start menu? You can try this technique first to see if it does the trick. If you have already tried this and were unsuccessful, there are two more options: An undelete utility and file recovery services. Both have their advantages and disadvantages, but software is where you want to begin. How to get back your data In order to recover deleted files on your computer, the following conditions must be in place: The lost file must still exist in the directory. The sectors that were used by the deleted file must not be overwritten yet. The file must not have been fragmented. Directory: If you want to recover your files, the deleted file should still be available in the directory. In other words the undelete process requires that the lost data you are recovering not bee overwritten by new or different data created in the same directory. Sector: In addition to the directory, it is important that sectors themselves, where the original, lost file was located, not be overwritten with a new file. Fragmented files: If you really want to succeed with the undelete process, the file you are recovering should not have been fragmented since it was deleted. The sectors of the disk which once held your data must maintain it’s sequential order, undisturbed and not fragmented. You can recover your lost files Files that were accidentally deleted can usually be recovered without problems, but you need to move quickly before another file is saved in its place. If this happens, there is nothing you can do to correct it. Don’t wait a minute longer – take action now and begin downloading and using undelete software, or contact a disk expert. These two methods are the only way to know for sure if your lost data can be recovered. Ken Roberts recovers the simplest situations like undelete to the most severe problems like a dead hard drive. He believes the real underlying problem in data loss however is people don’t know what to do because most of them have never experience data loss. This data recovery article will inform the uniformed to help them make the best educated decision to recover their data.

WINDOWS 7 – Introduction – Download the Beta

Windows 7 is the updated version of the Vista operating system from Microsoft. It was built around feedback from users and has been developed to work with touch screen controls, among other features. However, because Microsoft isn’t providing technical support for the Beta, we strongly recommend that only experienced computer users sign up. How experienced? At minimum, you should be comfortable backing up a computer, formatting a hard drive, burning an ISO file to DVD, and installing an operating system from scratch. You should also be comfortable troubleshooting problems on your own. If you’ve not used beta software before, please read the warning messages and make sure you know what you’re getting into. Note:The Download Now link will take you to Microsoft’s download page where you can register for Windows 7 beta and receive a product test key. Free. No limitations. Windows 2000/XP/Vista; 1 GHz 32-bit or 64-bit processor; 1 GB of system memory; 16 GB of available disk space; Support for DirectX 9 graphics with 128 MB memory (to enable the Aero theme); DVD-R/W Drive; Internet access (to download the Beta and get updates). – Download.com Windows 7 – Over the past few years, you’ve asked us to make some changes to Windows. We listened closely. Now it’s time to share an early look at how we’ve used your feedback. Windows 7 is faster, more reliable, and makes it easier to do what you want. Both the everyday things and the killer “is that really possible?” things. Dig into this site to see what’s coming. – Microsoft Download Windows 7 Beta at Download.com http://www.download.com/TSA/3000-18513_4-10906772.html User reviews of Windows 7 Beta http://www.download.com/TSA/3640-18513_4-10996575.html Windows 7 Technical Support Group http://ca.groups.yahoo.com/group/Win7/ Windows 7 Home Page http://www.microsoft.com/windows/windows-7/ What’s new in Windows 7 http://www.microsoft.com/windows/windows-7/whats-new.aspx Windows 7 Screenshots http://windows7news.com/2008/09/20/windows-7-m3-screenshots-galore/ Windows 7 Wiki http://en.wikipedia.org/wiki/Windows_7 Download the Windows 7 Beta http://www.microsoft.com/windows/windows-7/beta-download.aspx Comparison of Microsoft Windows versions http://en.wikipedia.org/wiki/Comparison_of_Microsoft_Windows_versions