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Message: <blockquote data-quote="laal" data-source="post: 8618488" data-attributes="member: 94459">What is RAM IC ? how does it work on mobile phones handsetsRandom access memory (RAM) is used in mobile phones circuit to  store memory datas. It is made of millions of transistors and  capacitors that being packed into integrated circuit (IC)Transistors and capacitors are paired to create a memory cell, which  represent a single bit of data. The capacitor holds the bit data of  information, a 0 or a 1. The transistor acts as a switch that lets the  controlcircuitry on the memory chip read the capacitor or cahnge its  state. In most cases common form of mobile phones memory is a Dynamic  random access memory (DRAM)The opposite of RAM is Serial Dynamic Random access memory (SAM). SAM stores data as a series of memory cell that can only be access sequentially. If the  data is not in the current location each memory cell is check until the  needed data is found.<a href="http://1.bp.blogspot.com/_8JZhVVmpICU/S_ZdZaJXxGI/AAAAAAAAAZw/OFVP85mOm7I/s1600/ram.jpg" target="_blank"><img src="http://1.bp.blogspot.com/_8JZhVVmpICU/S_ZdZaJXxGI/AAAAAAAAAZw/OFVP85mOm7I/s400/ram.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a>SDRAMSDRAM stands for Synchronous Dynamic Random Access Memory. DDR is short  for "DDR SDRAM" and stands for Double Data Rate. Nowadays to avoid  misunderstandings SDRAM is often specified as SDR SDRAM and SDR stands  for Single Data Rate by analogy with DDR. Therefore, the main difference  between SDR and DDR memory the doubled speed: DDR can transfer data at  roughly twice the speed of SDRAM. DRAM. Dynamic Random Access Memory is used to temporarily store  information on mobile phones. DRAM is made up of many cells and each  cell is referred to as a bit. A cell contains a capacitor and a  transistor. Since computer machine language is made up of 1s and 0s, it  has the value of one when active and zero when inactive.SDRAM or Synchronous Random Access Memory is the result of DRAM  evolution. This type of memory synchronizes the input and output signals  with the system board. Its speed ratings are in MHz. SDRAM was  introduced in 1996 and is still used today. SDRAM transmits every clock  count at a specific time.DDR RAM (or Double Data Rate Random Access Memory) does the same but it  does so twice every clock count. This makes DDR RAM twice as fast as  SDRAM.</blockquote>

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