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RAM

Ram (Random access memory) is uses to access data very quickly..That means any data on ram can be rapidly accessed. This is why.The performance of a computer mainly depends on ram. It stores Data temporarily and everytime computer restarts the memory is erased. ram is measured by it's space .it's unit is byte (see hard drive)

There are various types of ram SD, RD, DDR, DDR2.SD is comparatively slower then other rams and now there is nosupported board in the market. RD ram is very fast ram but it'sproduction is stopped due to it's high price and less popularity DDR & DDR2 ram is currently top of the market.Their bus speed is about 400 & 533, 600 There are many companies that make ram like Twinmos, Kingston.