A gadget is a small technological object (such as a device or an appliance) that has a particular function.
The word 'gadget' could be defined as a new, unusual device, mostly used for entertainment; yet also for household and security. Whereas a 'device' means any tool or instrument used during a particular work to achieve the desired result.
TODAY There are so many devices of this kind that it's impossible to tell, where the boundary between a gadget and a device lies.
For example, a DSLR(Digital Single Lens Reflex) cameras, mobile phones, Touch Pad's, Computers, digital cameras, Laptops, Portable mp3,mp4 players, 3d tvs/monitors LED tvs/monitors, LCD tvs/monitors, Consoles and Motion Sensing Peripherals and there are many more devices like these which would be called as a gadget.
NOW Days Gadgets and Technologies are being used in every field and at every place like use of Gadgets in schools, hospitals, railway stations, Airports, Hotels, etc.. Gadgets are being used in house hold works. Now days every work is being done with the help of different Technologies and Gadgets.
