30-07-2009, 05:02 PM
As processors and buses roughly double their data capacity every three years (Mooreâ„¢s Law), data storage has struggled to close the gap. CPUs can perform an instruction execution every nanosecond, which is six orders of magnitude faster than a single magnetic disk access. Much research has gone into finding hardware and software solutions to closing the time gap between CPUs and data storage. Some of these advances include cache, pipelining, optimizing compilers, and RAM. As the computer evolves, so do the applications that computers are used for. Recently large binary files containing sound or image data have become commonplace, greatly increasing the need for high capacity data storage and data access.
http://www.http://pptpdf.net//?file=/computer%20science%20and%20electronics/Holographic%20Memory.pdf&name=Holographic%20Memory.pdf