Virtual reality (VR) is a computer technology that uses software-generated realistic images, sounds and other sensations to replicate a real environment or an imaginary setting, and simulates a user's physical…

A smartphone is a mobile phone with an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use.…

A laptop, often called a notebook or "notebook computer", is a small, portable personal computer with a  form factor, an alphanumeric keyboard on the lower part of the "clamshell" and…