The main differences between a laptop and a desktop computer are in their portability, design, and performance. Laptops are great for mobility, while desktops excel in performance and flexibility.

Laptop: Designed for on-the-go use; has a built-in screen, keyboard, and trackpad; compact, all-in-one design with a lid that closes; all components are integrated into a single unit; runs on a built-in battery that needs periodic recharging (but can be plugged in all the time if you’re near a wall socket); generally more expensive for equivalent performance due to the compact design and portability.

Desktop: Typically stationary and not designed for easy portability; requires an external monitor, keyboard, and mouse which allows for customization and upgrading; plugs into a power source directly, providing a constant power supply; offers better value for performance as components can be larger and more cost-effective.