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Wednesday, March 30, 2011

Computer 101: The Random Access Memory (RAM)

Ever heard of the term RAM or Random Access Memory, If have used a computer then chances are you have heard of it.  How about the following, SIMM, DIMM, DDR and many others, well they may sound different but when we asked an ordinary person on the street, they won’t know what those terms will mean. Simple put it the SIMM, DIMM and DDR have something in common, they are all RAM.  Now what is RAM and how does it work? Well let’s put it this way, without the basic RAM or memory, your high tech devices will not work, those devices include, computers, laptop, phones, and the like that need a specific minimum amount of memory to function properly. The RAM or memory has one important feature that makes it very useful and has been adapted to all almost computer based devices. The size or the amount or space for the data that can be created on a small package.

Take a look at today’s latest Smartphone and gadget. Most of them have more RAM than high end gaming computer and to think that they smaller devices compare to a regular size computer. Most high end phone has 8, 16, or 32 Gig of expandable memory installed on them. The actual size of the memory package for these devices has become much smaller compare to a memory for a regular desktop computer.


Now how does a memory work, let’s take a regular desktop computer for example purposes. Let’s say that this computer has 1GIG of memory installed in it. Now this 1 gig of memory space may be compose of 2 or more memory module package just like in the fast or for new memory module package the 1 gig memory amount is now contained within a single memory module or package. Who uses the memory amount inside a computer? Well there are a lot of users who need the memory for them to work properly. All computer software needs the space provided by the memory to work properly. Computer software includes the Operating system and the Application program.


The operating system like windows, MAC or any other OS is the first to use the memory space available to it. In pact it manages the memory space available so that not one application program has the monopoly of using the memory space. The operating system warns the user if the available memory is not enough for multiple programs being run simultaneously by the user. It’s like this, if the memory is near capacity a warning will be given and additional program will no longer be permitted to work. The OS will ask the user to close program not being use to make way for other program to use the memory resources vacated by the previously closed program.


To cope with this problem, the most common solution is add more memory module to increase the  amount space available in a particular computer so from 1 gig it can be expanded to 4 gig maximum for 32 bit system. Wait a minute what is that? Yes there is a limit to how many can be added to a regular computer notice the maximum slot available for most computer in the 32 bit architecture is 2 up to 4 slots per motherboard. This was by design way back when it was costly to produce a memory module. They design it thinking the limit for the 32 bit architecture will not be reach yet. But since the computer technology development and evolution is very fast, the 64 bit which is use initially for big business is being push for use on the regular market.


Now let’s go back to the memory, there’s a saying the bigger memory the better yes this is true, but this will also cost a lot. The more memory a computer has the more the number of program it can use simultaneously. And for single program user the more memory the faster the program will run and work for you. Example of this when playing your favorites games, or watching a movie on your computer, or listening to music while typing a document, or using editing software that requires a lot memory to work fast and effectively. In the end it’s all about what you require will determine how much memory amount you will need to satisfy that requirements.

Monday, March 28, 2011

Mac Data Recovery

This article has been contributed by David Ritchie. David is a software developer and technical writer with over 10 years of professional experience. He is currently interested in Mac data recovery software.




As a Mac computer user, you pride yourself over the benefits of this platform than that of the PC.  However, whether you are a Mac computer novice or veteran, you will find that losing data on the Mac is no fun.  Worse, the Apple provides very little support for data recovery once files are deleted and overwritten from the trash bin.   Your ally in this regard are third-party software tools specific for Mac Data Recovery.


If you have not yet had the misfortune of data loss from your Mac, you are wise to be reading this article.  In addition to sudden power outage events, data loss can occur while performing files transfers to or from the Internet.   A poorly formatted file, a server failure, or your ISP provider's connection can be the reasons for data loss during Internet file transfers. 

Signs of impending data loss can associate with an oncoming hard disk failure.  If you notice your Mac slowing down you can certainly check the health of your hard disk using the installation CD or DVD to run the Disk Utility program. 

When data loss is known, third-party tools such as MacKeeper and other Mac Data Recovery tools can help you find particular files for recovery.   Finding the data recovery tool that works for you requires two things; your understanding of the operating system you have with your Mac and the file types familiar to you that will need recovery.  A bit of web research or research at an electronics store will help you determine which program would work to your greatest advantage.  Read a few product and user reviews to ground yourself in others' perspectives of one tool over another. 

Generally, Mac data recovery tools operate by doing a deep scan of your hard drive for lost file fragments with header information that is pulled together in a list for you to determine which files you wish to recover.  Common graphics, text, audio, video, and photo file formats are searched. Some Mac data recovery tools will also allow you to preview the recoverable file.  The recovery operation is then called by you for the files you wish to recover. 

Proactive steps to investigate and purchase Mac data recovery software before you need it puts you in the best position to deal with the situation when needed.   Also, you are wise to record any error messages displayed while using your Mac and do a bit of research on what each message means to ward off potential hard disk issues and data loss.   

Mac Data recovery tools often include hard disk troubleshooting and recovery utilities. That can be especially helpful if you do not have the original installation CD/DVD for your Mac and your hard drive is inaccessible.   Emergency boot-up software will allow you to start  your Mac from the external media to your hard drive and then determine if you can recover your hard disk.   




This article has been contributed by David Ritchie. David is a software developer and technical writer with over 10 years of professional experience. He is currently interested in Mac data recovery software.

Other work of David Ritchie is posted on the link below.


http://allyouneedislists.com/technology/software/5-ways-of-backing-up-your-mac/

http://www.eltalearning.com/mac-how-to-tip-closed-captioning-software-for-the-mac-os-v10-6/2011/03/20/


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