Week 3 post - retrieving data

So far, we have the central processing unit (CPU), Random Access Memory (RAM), hard drive, and a few sub-parts such as the memory controller chip (MCC) and Bus (one of the data highways). The CPU is the brain and the RAM contains temporal data that is routinely needed, or expected to be needed, by the CPU. The hard drive is the third-tier component that contains all permanent data. The hard drive cannot keep up with the speed of the CPU so the CPU retrieves data from the RAM through the Bus. The CPU’s process is initiated by the clock wire.





Following, the CPU seeks to retrieve information by communicating with the RAM. Assuming the RAM contains the needed information, the CPU uses an address Bus to transmit the location of the data and execution command to the MCC. The MCC interprets the instructions, grabs the data, and returns the data through the Bus back to the CPU for processing. The CPU can then produce a solution for the person in front of the computer screen.







Resources:



Meyers, Mike. CompTIA A+ Certification All-in-One Exam Guide, Ninth Edition (Exams 220-901 & 220-902), 9th Edition. McGraw-Hill Education, 20160107. VitalBook file.