How Cloud Computing Works? [aboutcomputer99.blogspot.com]

How Cloud Computing Works? [aboutcomputer99.blogspot.com]

Question by : Can someone explain how computers work to me? I want to buy a laptop for a friend but I'm pretty stupid when it comes to IT stuff.. What does a processor do and how do you know if one is faster than another? What does the hard disk do and does it affect computer speed? What does the DDRAM do, how much is a good amount and does it affect computer speed? I think those are the main specs I see everywhere where laptops/computers are sold. So yeah basically I just want to know how the main components of computers work so I know what to buy and which deals are better than others. Thanks! Best answer for Can someone explain how computers work to me?:

Answer by Wes
Basically, the processor processses the tasks that your doing at any given time. Running a game, playing music, watching youtube. newer computers come with several "Cores" being a number of processors or threads, inside a single processor. mines a 6 core operating at 3.3ghz. so i have 6 different processors inside one unit. all operating at 3.3ghz. The hard disk, is the hard drive, its how much information can be stored on the computer at any given time, videos take up more room the audio, and text takes up even less room. and the ram is essentially the reference point from the hard drive and the processor... When you look up for instance a word document you made. the computer remembers its location and whatnot. the ram stores that info so its easy to access later.. and doesnt have to recall it from scratch. the more ram, the more it can recall faster. if its something it has to recall new. it has to rely on processor speed.. Hope i helped.

Answer by Bil
The processor, also known as central processing unit or CPU is the "brains" of the computer. It does all calculations and computations required for a computer to function. These vary in speed which is measured in Hertz (Hz) which are cycles per second. They also vary in the amount of cores (or individual CPU's inside of a CPU). For instance, a Duel core 3.06 GHz CPU is a CPU with 2 cores that runs at 3.06 Billion cycles per second. The more cores there are the better multitasking will be and the higher the Hertz the faster each core can complete calculations. Hard Disks or Hard Drives store data. When a user loads an application and writes up an e-mail or a word document, if the computer suddenly lost power the files being worked on would be lost unless they were saved to the Hard Drive. Picture it as a filing cabinet where you put everything you want to look at later. If a hard drive is a filing cabinet then the size of the HD is the size of the cabinet. These are measured in bytes and nowadays are usually over 500 GigaBytes and into the TeraBytes. (Gigabyte is Million's Terabytes is Trillions). The hard drive does effect some elements of computing speed. The higher the rotations per minute or RPM and the higher the data rate the faster the hard drive can write and access data. For example a 5600 RPM hard drive may also have write speeds of 3.0 GBps. DDRAM is a version of RAM or random access memory. Earlier I mentioned that open documents not saved when the power goes out are lost. This is because anything open and running is running in RAM which is only for temporary storage. The faster the ram and the more ram you have the better the system will operate. RAM is measured in size like a hard drive but often ranges from 512 Megabytes to as much as 32 Gigabytes. A decent laptop has at least 2 Gigabytes with modern operating systems but this is my opinion only. The speed of RAM is measured in hertz and may be something like 1333 1066 or even higher. For basic computing these elements are what makes a difference. For gaming, things like graphics cards and cooling devices are more important. I build my computers myself and often help my friends with building computer so I hope these explanations shed some light on what you are purchasing!

Answer by peter
the cpu is the brain, it does the calculating the hdd is the cabinet, it holds the data the ram or systemmemory is the hallway where the data waits to be processed. The first thing to consider when buying a laptop is do you actually want a laptop or a notebook? This mainly depends on wether you definately want to be able to read dvd's "on the go". If yes then one needs a notebook if no then a netbook or notebook would do. The next thing to think about is the mobility factor. Some people don't want to move their laptop around at all (like me, i bought a netbook as a small extra computer for at home and use it on the poweradapter) but for others mobility (size, weight, batterytime) might be very important. There is no easy answer to the mobility issue because it should be balanced against the needed performance/features and costs. Next the performance/features come in to play, like for instance: - general performance andmultitasking capabilities - mutimedia capabilities like hdmi-out - screensize and resolution - gaming capatibilities All of the above should be compared to available prices, and user and expert reviews. It realy doesn't need a lot of computerknowledge to do this, just an analitical inventarisation of your requirements and of what's avialable for what price. There are some good points to remember though: 1: gaming and mobility are opposite forces. One can have a very mobile good performing laptop/netbook and do light gaming, but heavy gaming wil quickly decrease mobility. (of course price is a factor also, when you have more money, more is possible) 2: laptops that use specially designed mobile cpu's tend to stay cooler then laptops that use standards cpu's. Having a cool laptop/netbook is important so when possible opt for a mobile cpu. 3: memory is very important, it's like a lubricant that makes everything work smoother. when you have 4 gb in a laptop/or netbook then you'r ok. 8gb is nice (64 bit only), 3gb wil do, 2 gb wil do for 32 bit but is marginal for 64 bit, 1 gb is very marginal (32 bit only). 4: a multi-core cpu is very advicable although on the low end systems you'd probly get a single core atom, but that's a matter of price. 5: reviews are very important, especially when a lot of em are available they may gie a usefull idea of what the laptop is about. sources for reviews are online sellers, youtube, review sites, yahoo search. my netbook is the hp pavilion dm1 http://notebooks.com/2011/01/07/best-affordable-consumer-notebook-of-ces-2011-hp-pavilion-dm1z/ http://www.logicbuy.com/deals/hp-dm1-laptop-coupon/15078.aspx - small screensize - very mobile - very good performance - new mobile dual core fusion cpu with integrated video capabilities (can play hd-video) - not to expensive - no dvd-drive (it's a netbook) - can hold up to 8gb of ram but might come with only 2 so you might want to add some. If you like a dvd and/or bigger screen here is a laptop for a similar price: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=322989&CatId=4938 there are 78 user-reviews and the average rating is very good, so my guess is it should be a good laptop for everyday use, and some light gaming as wel as playing (hd) movies (although it doesn't have a blu-ray drive) The laptop has 5 eggs on newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16834215057 But this laptop should be immediately upgraded to 4Gb. It's performance isn't mindblowing but it's a lot of laptop for the price.

Answer by Rick Betterly
If your getting a computer for a friend all you need to know is the more ram the better and the processor you want at least 2.5 ghz or higher.

[how computers work]

Take a look inside your computer to see how transistors work together in a microprocessor to add numbers using logic gates and binary. This video was inspired by a great book called Code by Charles Petzold - see it on Amazon: amzn.to

aboutcomputer99.blogspot.com See How Computers Add Numbers In One Lesson

Cloud computing consists of shared virtual resources which are accessed via an application programming interface.  The actual resources may be found in different locations, some inside the organisation or outside.  You can get these resources from a managed or remote service provider, a pay-as-you-use center or an enterprise data center.

Users can easily access extra computer resources as and when they need them.  The beauty of using cloud computing and shared resources is that you get automated, flexible management to deliver its resources to all users at all times anywhere. This is great for executives who need to manage people, work and documents while out and about travelling.

Let's take an example.  Say you are an executive in a large company and your responsibilities include making sure all the employers have the right hardware and software they each need to do their jobs.  As well as computers you need software licences for each software each employer uses.  Not everyone has the same roll in a company obviously so some will need certain software others won't.

Now if you employ new staff you will then need to buy another software licence.

With cloud computing instead of installing a suite of software for each computer, you'd only need to load one application. This application would allow workers in the company to log into an online Web-based service which hosts all the programs each worker would need for his or her job, perfect solution! 

One of the main benefits of the cloud computing system is that there is a significant workload shift because local computers don't have to run applications which may slow your pc down.  The actual network of computers that make up the cloud handles the load instead. The only thing the user's computer needs to be able to run is the cloud computing systems interface software which can be as simple as your favourite Web browser.

Cloud computing seems to be really starting to take off right now.  It has been around some time now and as security and technology evolves more and more people will be jumping on the bandwagon.

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