A computer is a machine which is capable of receiving information in a particular form and of performing a sequence of operations. It is a also known as a programmed device. these programs enable computers to perform an extremely wide range of task. You can also use it to edit or create spreadsheet, presentations and even videos. In the current world, its almost impossible to be without a computer. Not only that it helps business people make productive income and helps students understand well about their studies.
List and explain in your own words the main computer components.
There are 4 main computer components which are the CPU (central processing unit),memory,input device and output device, The CPU is the brain of the computer where most calculations takes place. It is a piece of hardware that carries out the instructions is a computer program. Many CPU's today can do more than 1 billion instruction in a single click. The next one is the memory. It is a physical device capable of storing information temporarily or permanently. Input device is a piece of hardware used to provide data and control signals. Examples of input devices are keyboards,mouse and scanner. After the CPU execute instruction, output devices allow data from computer to display. Examples of output devices are monitor, printer and fax machine.
Based on your understanding, compare the usage of personal computer and laptop.
Based on my opinion, the PC is larger and laptop is compact. Laptop runs on a rechargeable battery while PC is operated by a direct power source. If the owner wants to upgrade their PC they can install a newer graphic card or hard disk but a laptop is harder to upgrade.
References
https://www.computerhope.com/issues/ch001399.htm
http://www.pixuffle.net/the-importance-of-computers-in-our-daily-lives/
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