Computer Hardware
- Technology

Computer Hardware

Several components were working simultaneously, not only when you pressed the power button, but when you press every single key on the keyboard.


So, you pressed the power button and started using your PC. But do you have any idea what happened when you pressed this button? What electronic devices worked together so you can start working? Exactly! You probably had no idea that several components were working simultaneously, not only when you pressed the power button, but when you press every single key on the keyboard. These Components are the Computer Hardware.

So what are these Components

In every single computer, there are many major indispensable components that are stored on the motherboard. Let’s dig in and mention them


Obviously, you have to join the PC components together somehow in order to let them work simultaneously right? This is the role of the Motherboard. As the name mentions, it the origin of them all. Without the Motherboard, all the other devices have no use. It is an electronic board, with wires connected to each others, and open ports and empty slots. These open ports and slots are where the other devices get connected.

Central Processor Unit (CPU)

The PC is based on commands and orders. In other terms, when you move a mouse, or press any key on the keyboard, these actions are being handled by the processor to convert them to what you actually see on the screen. You find the letter printed on the screen when you hit the keys or you see the cursor moving when you move the mouse. These commands took place thanks to the processor.

Sometimes you realize that a certain PC is “faster” and more responsive than other PCs, and usually it’s because of its processor. The more cores a processor has, the more tasks it can handle simultaneously. For instance if all you need from a PC is typing documents, you don’t need a processor with more than 2 cores (also known as dual-core). But if you are a heavy user that opens several internet browsers at the same time while working on a huge project and playing games all at the same time, you might need a processor with 8 cores (known as octa-core).

Random Access Memory (RAM)

Consider this! You have a warehouse where you store everything you need before, after and during the time of need of the item. This is exactly the Random Access Memory. The difference between the warehouse and the RAM, besides of course the physical size, is that data stored in the RAM vanishes at every system shut down.

Similar to the number of Cores in a CPU, the size in Bytes of a RAM plays a big role in the performance of a PC. Flashback to the warehouse example; the bigger the warehouse is, more items can be stored without congestion. Same case for the RAM, the bigger the size in Bytes, more data can be stored, thus better performance.

Hard Disk Drives

The Hard Disk is typically the “Brain” of the PC. All user data is stored there, along with the Operating System and all installed Software. Different Hard Disks differ by the Read and Write speed. Again, the faster the speed of Read and Write, the better performance we get from a PC. You can also think of it as a Storage device, so the bigger the capacity of the hard disk is, the more data we can store. When you hear someone’s PC got infected by a certain Virus, it is the Hard Disk that actually got infected.

Graphics Card

Also known as Video Card, the Graphics Card is responsible of everything visual. It is the link between the screen and the PC; in other terms, when you plug the HDMI or VGA cable of the screen in the PC, you are actually plugging it in the Graphics Card itself. Like every other device, there are several types of Video Cards differing by the speed of image rendering; by the resolution it can handle, and by the number of frames per second it shows in a certain video.


These devices mentioned above and many others work all simultaneously and communicate with each other, in order to give a final output on the screen.

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