Compulsory Computer Parts Needed For A Functioning Pc

Compulsory Computer Parts

The Compulsory Computer Parts of a desktop are the computer case, and power cord. Each part plays a key role and is essential whenever one intends to run a computer. In this article, we will provide you with a brief description of each of the basic parts of a desktop PC.

Essential Computer Parts:


Computer Case:


The computer case is the box made with metal and plastic that contains the main computer parts. It accommodates the motherboard, central processing unit (CPU), power supply, and other functional components.


Compulsory Computer Parts

Computer cases have different sizes and shapes. A tower case is tall in stature and sits next to the monitor or on the floor whereas a desktop case remains flat on a desk, and the monitor usually sits on top of it. The front of the case usually has a power button (on/off switch) and one or more optical drives.personal computers purchased today include tower cases rather than desktop cases. However, some computers are being made with all of the internal components built into the monitor, eliminating the need for a tower.

Computer Parts – The  Monitor:

The monitor works with a video card which is located inside the computer case.Monitor displays images and text on the screen. Newer versions of monitors usually have LCD (liquid crystal display) or LED (light-emitting diode) displays. These can be extremely thin and are often called flat-panel displays. Older monitors use CRT (cathode ray tube) displays. CRT monitors are much larger and heavier and eat up more desk space.Compulsory Computer Parts

Most monitors that enable the user to change monitor’s display settings, and some monitors contain built-in speakers as well. LED displays actually function as LCDs that are backlit with light-emitting diodes. This functionality makes way for greater contrast than normal LCDs. 

Power cord

The Power cord is another on the list of compulsory computer parts. It links between the power outlet and the power supply unit in the computer casing. The computer will not turn on if the power cord is not connected properly with the power source. Power cords can be connected to a surge protector to protect the computer from voltage spikes. One can also use an uninterrupted power supply (UPS) that acts as a surge protector and provides temporary power in case of a blackout.


The keyboard is one of the primary ways to communicate with the computer and enter data. There are many different types of computer keyboards:wired, wireless, ergonomic, and multimedia. All the different types of keyboards are very similar to its functionalities though there may be differences in the location of some keys. Keyboards are very similar and help to accomplish basically the same tasks. At present, optical keyboards are getting popular as well. These keyboards do not require any wired input with the desktop, providing the user greater flexibility.


The mouse, one of the essential computer parts, is a pointing device. It lets the user point to objects on the screen, click on the objects and navigate between those. Optical and mechanical are the two main types of mice that are used widely. The optical mouse uses an electronic eye to detect movement and is easier to clean whereas the mechanical mouse uses a rolling ball to detect movement. Normally, a mechanical mouse is less expensive. Regular cleaning is necessary to keep the mouse working properly.

Compulsory Computer Parts

Traditionally, a mouse is connected to the computer using a USB or PS/2 connection. However, there is also the option of a wireless mouse, which can reduce clutter on the desktop. 

Mouse alternatives

There are other devices that provide the same functionality of a mouse. Many people find those easier to use, and those also require less desk space than a mouse. The most common mouse alternatives include:

A touchpad on a laptop

Trackball: A trackball contains a ball on top that can be rotated freely. Instead of moving the device like a mouse, the user can roll the ball with his fingers to move the pointer rather than moving the device like a mouse.

Touchpad: A touchpad, also known a trackpad, is a touch-sensitive pad that lets the user control the pointer by making a drawing motion with the finger. These are located on laptop computers.

These are basically the parts of a computer that must be present and be interconnected with each other to start and run the machine on a day to day basis. There are a lot of other internal parts of the desktop that are connected by manufacturers. But the essential parts need to be connected by the user to power the computer on.

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