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In today抯 world, computers have become a necessity in almost in all kinds of enterprises because of its astonishing capacity of storing unlimited variety of data effectively. There are basically two kinds of storage- internal storage not to mention external storage. In the article all of us will discuss about the pros and cons these storages.

Internal storage which is also known as main memory is for two types RAM along with ROM.



? ROM or the read only memory is basically a memory chip which will stores instructions and files on permanent basis plus don抰 even require power to work. The contents are crafted on the chip during the time of its manufacturing and shouldn't be changed thereafter. ROM is very important as far as the technique of handheld computing is concerned because in will probably be the handhelds the computer not only sometimes will get stored but executed in them too. In a popular desktop, OS is stored on its hard drive and get loaded into main memory whenever you boot up. This creates the need of upgrading handheld's operating-system and replacing the contents of ROM eachtime we boot up. Seeing this, nowadays people have launched using "flash memory" ROM chips in place of ROM because they are generally upgraded programmatically and don抰 necessitate replacement.

? RAM, or random access memory is a group of memory chips which accustomed to store programs and records. Unlike ROM, it cannot retain it has the contents without power and its contents are easily modifiable.

External storage is provided by the storage cards. These cards are available in the different types prefer:

? CompactFlash (CF)

? PC Credit cards

? MultiMediaCard (MMC)

? Secure Electronic (SD)

? Microdrive

? SmartMedia

? Memory Stick (MS)

There are many retailers available in the market which provide computer data files storage products like DDR PC3200 recollection, DDR PC2700 memory, DDR PC3200 memory, PC2700 DDR SDRAM 2gb memory etc. sourced from the renowned companies like Compaq, Acer, IBM, Dell, Toshiba, Sony and other various companies at greatly discounted rates. Apart from that, there are also various websites through which one can purchase superior memory for Compaq laptop or pc, Mac pro ram, Samsung ddr3 ram etc. without actually leaving their home.