Central Processing Unit (CPU)
The CPU of your computer is very much like your brain, it is the part of the computer that gives out all basic instructions to every other component on your computer.
Motherboard
The motherboard of your PC is your inner body, it connects all the different parts of your PC together, your motherboard is another critical component
Random Access Memory (RAM）
RAM, temporary memory/information in the computer.
Hard Disk Drive/Solid State Drive (HDD/SSD)
A Hard Drive uses a disk and magnets to write data on to the disk that will permanently store information
Solid State Drives work off of flash memory, unlike a hard drive they have no moving parts and everything works electronically.
Power Supply Unit (PSU)
this is where your power supply comes into play.
Graphics Processing Unit (GPU)
it is the component that outputs all your visuals on the computer and let’s you playback video.
Computer Case/Tower
tower will keep all your components protected, in place, and provide proper ventilation.
Computer Monitor
A computer monitor is simply the screen that will be giving you your video output from the computer.
Optical Drive/Blu-ray Drive
Blu-Ray drives also read CDs/DVDs as well as Blu-Ray disks, but may not WRITE CD or DVD formats. Either one will be fine however, as what you need is something to read the disk to install your operating system.
Mainframe Computer
It is high capacity and costly computer. It is largely used by big organizations where many people can use it simultaneously.
Super Computer
This category of computer is the fastest and also very expensive. A typical supercomputer can solve up to ten trillion individual calculations per second.
Workstation Computer
The computer of this category is a high-end and expensive one. It is exclusively made for complex work purpose.
Personal Computer (PC)
It is a low capacity computer developed for single users.
Apple Macintosh (Mac)
It is a sort of personal computer manufactured by Apple company.
Laptop computer (notebook)
t is a handy computer that can be easily carried anywhere.
Tablet and Smartphone
Modern technology has advanced further. It has helped develop computers that are pocket-friendly. Tablets and smartphones are the best examples of such computer.
Keyboard
A keyboard is a human interface device which is represented as a layout of buttons.
Computer mouse
A pointing device is any human interface device that allows a user to input spatial data to a computer
Touchscreen
Image scanner
Video input devices are used to digitize images or video from the outside world into the computer. The information can be stored in a multitude of formats depending on the user’s requirement.
Webcam
Digital camera
Microphone
Audio input devices are used to capture sound. In some cases, an audio output device can be used as an input device, in order to capture produced sound.
There are many input and output devices such as multifunction printers and computer-based navigation systems that are used for specialised or unique applications.
Network interface controller (NIC)
Modem
Computer display
A display device is an output device that visually conveys text, graphics, and video information.
Printer
Projector
Speaker