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P1 Unit 18 Essay

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Unit 18: P1
CPU: The CPU (Central Processing Unit) is the most important part of the computer, as it acts as the computer’s ‘brain’. The two typical components, the CPU consists of, are the ALU (Arithmetic Logic Unit) and the CU (Control Unit). The ALU performs arithmetic and logical operations whereas, the CU extracts instructions then proceeds to decode and execute them. When referring to the CPU, GHz are normally presented as a clock frequency, representing a cycle of time, e.g. a CPU, containing 3.0GHz, has a clock that beats at 3 billion times per second. The higher the GHz rating, the more things can be done in a unit of time. The Motherboard contains both: the CPU and the Memory. These two components are connected via the Internal Data Bus (A communication system that transfers data between components). The Internal Data Bus can also transfer data between computers.
RAM: The RAM (Random-Access Memory) acts as a storage of memory that can be accessed very quickly. The processor needs to continually go to the hard disk to overplay old data, if the RAM fills, as this will cause operations, being carried out, to become slower. It is also …show more content…
SATA has many advantages compared to IDE, for instance: Inexpensive and large storage capacity. Though, IDE’s advantages are that it has maximum compatibility. However, both have disadvantages, SATA has a lower MTBF than SAS (700,000 hours to 1.2 million hours of use at 25 degrees Celsius) less suited for servers. On the contrary, IDE lacks support for new technology such as native command queuing and hot-plugging hard drives. The Master and Slave Drive is a special configuration, used by the IDE, to allow one drive’s controller to tell the other drive when it can transfer data to or from the

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