DDR2 Memory
The Double Data Rate two (DDR2) memory is the improvised version of the Double Data rate (DDR) memory. In a computer for high speed storage and quick performance of any operation this double data rate two synchronous dynamic random access memory is used in electronic engineering as a random access memory. The double data rate two memories is one of the dynamic random access memory (DRAM) is part of the synchronous dynamic random access memory (SDRAM).
The operation and implementations of the DDR2 memory is same as that of the synchronous dynamic random access memory, where the memory cells store memory which can be activated using the clock signal and the clock signal is used to synchronize with the external data bus for the operation. The bus speed of the memory cells in the DDR2 is twice that of the DDR memory. This is the main difference between DDR2 and DDR, hence per memory cell cycle four bits of data is transferred in DDR2.
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