Definition Different types Part of Computer :

 Definition of Computer :- 

A computer is an electronic device wherein we need to input raw data to be processed with a set of programs to 

produce a desirable output. Computers have the ability to store, process, and manipulate data. 

Computer invented by Charles Babbage. 

Parts of Computers & definition 

Central Processing Unit (CPU) :- The CPU is the brain of your computer, responsible for executing instructions 

and managing all tasks.  

 Random Access Memory (RAM) :- RAM is your computer’s short-term memory, temporarily storing the data 

your CPU needs quick access to. More RAM allows your computer to handle more tasks at once, improving speed 

and responsiveness. 

 Motherboard :-The motherboard is the backbone of your computer, connecting all components and ensuring 

they work together seamlessly. 

Graphics Processing Unit (GPU):- The GPU is responsible for rendering images, videos, and animations. This 

makes it an essential component for gaming, video editing, and graphic design. 

Power Supply Unit (PSU):- The PSU converts electricity from your wall outlet into power that your computer 

components can use. It’s crucial to choose a PSU that can supply enough power for all your components. 

Storage Devices: HDD vs. SSD:- Storage devices hold all your data, from your operating system to personal files. 

The two main types are: 

 HDD (Hard Disk Drive): HDDs offer larger storage capacities at a lower cost, making them great for 

storing large amounts of data like photos and videos. They use spinning disks (platters) to read and write 

data, which makes them slower than SSDs. 

  

 SSD (Solid-State Drive): SSDs are faster and more reliable with no moving parts. They significantly 

improve boot times and load applications faster. SSDs use flash memory, which allows for quicker data 

access compared to HDDs. 

Keyboard: Used for typing and issuing commands. Mechanical keyboards are popular for their tactile feedback and durability. 

Mouse: A pointing device used to navigate your computer’s interface. Options include wired, wireless, and gaming 

mice with customizable buttons. 

Touchpads: Commonly found on laptops, touchpads allow you to control the cursor through touch gestures. 

Monitor: Displays visual output. Monitors come in different sizes and resolutions, such as Full HD or 4K, and 

refresh rates (e.g., 60Hz, 144Hz). A monitor with a higher refresh rate is better for gaming, providing smoother 

visuals. 

Printer: Produces physical copies of digital documents. Printers can be inkjet or laser, depending on your printing 

needs. 

Speakers and Headphones: Output audio from your computer, essential for enjoying music, videos, and gaming. 

Projectors: Used to project the computer display onto a larger surface, often used for presentations.