Describe the basic operation of a computer Be sure to includ

Describe the basic operation of a computer. Be sure to include a description of how the cpu, memory and secondary storage devices work together to execute programs.

Solution

Here memory can be defined as a place where we can store our informative data or any sort of file in an electronic storage. In computer CPU frequently fetches data from the hard drive for the user entity. There is a hierarchy in order to fetch data from different levels of storage units in the computer system. Every data at first instance enters into the random access memory first. Some small part of data is also stored in cache memory, registers is used to maintain some set of instructions. We know that every unit/component in the computers be it memory, operating system, works in a team in order to have perfect mapping for the memory. Whenever we bring our computer ON or OFF, every time CPU is frequently using memory in order to remain up to date with memory. Taking into the look how computer is bring ON state:-

Firstly the computer loads data from read only memory and meanwhile does a required tests for the hardware component known as power on self test. While doing the POST process, memory controller keep on checking read and write operation in order to make sure that no error in memory chips.

After doing above process the system encounters Basic Input and Output System from the read only memory. This is also very essential step while bringing computer ON, because it gives us all the information about boot sequence, auto devices recognition (play and plug process), details about memory devices.

After computer finishes the above step then computer brings or loads operating system from hard disc into the RAM. So keeping in the mind whenever we start the computer, OS is kept into the RAM memory, thus increases the throughput and functionality of the system. After this when we open any kind of files/applications that is only loaded into the RAM unit. And the saved or stored files are kept permanently into the hard disc. Since we know RAM is a volatile memory which defines us anything we store in it is temporary as whenever computer shuts it is erased from RAM. So whatever is opened are kept in RAM so that CPU can access that required information more swiftly and enhances the performance and functionality of the computer.

CPU

CACHE

                                                                                RAM

                                                                    STORAGE DEVICES

                                                                      INPUT DEVICES