Custom Computer Science Essays
Computer Science Essays: Modern Motherboard Memory
Any modern computer carries out two basic tasks that are essential to their purpose - To store and process data - this may seem simple at first but only scratches the surface of what forms of data are operated on, and what those processes are.
Modern computers, never simple even during their inception; consist of a mass of interconnected components that work together, each performing their own role and communicating to a Central Processing Unit (CPU) which not only processes' data but also manages the movement of the data around the computer.
The essential core components of a computer are the Motherboard, CPU, power supply, main memory and data storage memory as well as an assortment of input and output devices either plugged into or built into the case of a computer, allowing the user of a system to interact with the computer.
The role of a power supply unit is fairly straightforward, save that the amount of power required by the computer should always be taken into account when specifying the components of a new computer or when upgrading an existing computer. The other components however require more discussion
Computer Science Essays: Phase Memory Ferroelectric
The history of computer memory research is littered with failed concepts that offered great promise, but could not deliver for technical or economic reasons. Phase-change memory technology is a relatively simple concept and should not be expensive, once developed.
It will be much faster and more radiation resistant than flash memory, and will last much longer. In other words, regardless of whether phase change memory is implemented from the top down (lithography) or the bottom up (nano-wires); the underlying technology is likely to come standard, at least in top of the line machines, in the near future.
The PCM uses chalcogenide glass material to store data into the memory cell.  PRAM is not the first use of chalcogenide for storage. The same material is used in rewritable optical media (CD-RW and DVD-RW), in which a laser heats up a small spot on the disk's inner layer to between 300 and 600 degrees Celsius for an instant.
That alters the arrangement of atoms in that spot and changes the material's refractive index in a way that can be optically measured. PRAM uses electrical current instead of laser light to trigger the structural change.
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