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As we all know, Personal Computers or PCs, are using multiple build components of different purpose that once combined make all this coherent system work flawlessly. One of the core components of the PC is memory, the thing that stores data/information. There are two types of memory in the PC, short term/temporary memory and long-term/permanent memory. The first one, temporary memory is a component of the so-called RAM which stands for Random Access Memory, one of the main specs or parameters of this component is memory size which means that maximum the capacity of this component is limited to specific size as predefined by the manufacturer. RAM have 3 generations DDR1, DDR2, DDR3-DDR5 which stands for the speed of the particular piece. All other components can have access to this memory and the transfer speed is usually different, and it is a combination of speed and memory size thus we can have: First gen: 256 MB, 1024 MB, 1 GB RAM and Second gen: 2, 4, 8, 16 GB of RAM, the second generation can have speed up to 128, 256, 512 bits.Another temporary memory is cache memory which transfer data between processor and temporary buffer which also have a size but not so big as RAM, so it can vary between 2, 4, 8, 12, 16, 24, 32 MB of the main feature of temporary memory that it don't store data after the power shut down or session logout.The last integrated type of memory which is long term memory is HDD or SSD.Hard disk drive and SSD. Solid state drive which have a greater size then temporary memory and can store memory permanently even after computer shut down or power the outage, but the temporary memory has to reset and clear after each shutdown.Permanent memory sizes have also 3 generations, from 5 MB HDD in 1973 to 10 terabytes each drive nowadays, the size of memory is a very important part of the computer system today and play a great role of the computer capacity, all branches of development starting from computer science and film industry to physics and Astronomy, all use to store more data and process greater sizes to do better things that will lead for sure, humanity to a greater future.
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