PENGERTIAN RAM Dan JENIS-JENISNYA

Understanding RAM
Understanding RAM is a hardware device that serves to store data and program instructions that will and already executed by the processor. RAM is temporary storage, this means that after the computer is turned off, RAM will be cleared and will be filled with new data that is required when the computer switched on and used. Own RAM stands for Random Access Memory. In contrast to magnetic tape or disk to be accessed sequentially, the contents of RAM can be accessed randomly, or do not refer to the location of the data. This makes RAM is faster than hard disk or other storage medium.
RAM itself is often referred to as main memory or main memory, main memory or primary memory or internal memory, or simply called a memory, although there are several types of memory installed on the computer. RAM function is supporting the processor in the processing of data and instructions in which it stores data to be and have been processed by the processor. Without RAM, a computer can not work because nothing accommodate input and output processor. RAM and processor must keep pace. Fast processor requires a large RAM to be able to work more optimally. The processor is slow given the huge RAM will be useless, although there is an increase in performance, but not significantly. For that there is a size limitation of RAM that can be used by the processor. Module capacity expressed in units Byte RAM, such as 256 MB, 512 MB, 1 GB, 2 GB and so on.Types of RAM
The types of RAM include:

   1. NV-RAM is the memory used by the BIOS (Basic Input Output System) to save the settings, this memory requires a power supply so that the savings are not lost. Therefore, in every computer there must be a small lithium battery that is used as a power supply NV-RAM.

   2. SRAM (Static Random Access Memory) is a type of RAM that is made from a kind of semiconductor that requires no capacitors and does not require periodic refresher so much faster. However, SRAM has a weakness, namely the cost of production is expensive so it is only available in a small capacity and a handle portion which is really important.

   3. EDO-RAM (Extended Data Out Random Access Memory) is the first generation that replaces RAM FP RAM in the CPU. This memory has a small capacity and capability. This type of RAM is not produced, the last work on computers with x86 processors such as the Pentium generation of the early start I and II.

   4. DRAM (Dynamic Random Access Memory) is a semiconductor memory that requires a capacitor as a pedestal to refresh the data in it. RAM has a speed higher than EDO-RAM. But lower than SRAM. In its structure, DRAM requires only one transistor and a capacitor per bit, so it has a very high density.

   5. DDR SDRAM (Double Data Rate Synchronous Dynamic Random Access Memory) is the development of DRAM that uses synchronous data transfer system but has a data transfer speed is doubled. This memory is generally only referred to as DDR and has three versions, DDR1, DDR2 and DDR3. Each difference is a problem of data transfer speed and PIN number that is on its feet.