There are numerous components associated with the operation of a personal computer. From the monitor, to the keyboard, the operating system, the mouse, the hard drive and the memory, there are numerous factors to consider when purchasing a computer for your family.
One of the most critical aspects of the machine is the data storage. Computer data storage can be classified numerous ways. There are literally dozens of methods in which data can be stored on to a device for use by a computer operating system.
There are numerous names for data storage, and there can be a bit of confusion when attempting to decipher the nomenclature. The two most commonly used methods of storage are called Random Access Memory and Mass storage devices. The functions of which are vital to the operation of a computer. The first type of data storage mentioned,Random access memory, is more commonly referred to as RAM.
The purpose of the RAM is to directly access the central processing unit, or CPU. The CPU will read the information that is stored on the RAM and will execute the commands as it is required by the operating system. One of the draw backs of the RAM is that it is volatile, meaning that when the device looses power, the information stored on the RAM cards will be lost.
A more permanent solution to the volatile nature of RAM, is secondary data storage. These devices will not loose the information stored on them when power is withdrawn. The secondary storage devices are not directly accessed by the CPU, but rather information is loaded on to the primary storage by an intermediary area. Meaning the CPU cannot directly access the information that is stored on the secondary device. IN order for it to access a piece of data, the necessary information will need to be located, and then loaded on to the RAM. Once the information has been loaded the CPU can access that piece of data.
Computers have evolved to the point that the methods by which the machines operated in the past no longer hold true to the present. At one time, data storage consisted of magnetic tapes that stored massive amounts of data, relatively speaking. Today, the same amount of information can be stored on a device that is the size of a stick of gum.
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i didn't like this camera. i had it for about 2 months, and then it stopped focusing. not to mention i hate the quality of the pictures i took. the color of the actual camera is pretty, i got the red one. but looking at all the pictures i've taken – even pictures taken on a very sunny day, iso 100 come out grainy and strange looking. the only plus that i can really think of is the size, since i'm used to carrying around an slr that doesn't exactly fit in my purse, its convenient to have a small camera. but lots of cameras are the same size or smaller, and i think canon's line of digital elph, which i had before my nikon, are much more functional and take better quality pictures.
Pro : pretty, good screen
Con : noisy/grainy pics, broke quickly