A "device" is a tool or piece of equipment designed to perform a specific function. It can range from simple items like a calculator to complex gadgets like a smartphone. Devices are often created to make tasks easier, more efficient, or more enjoyable, and they play a crucial role in our daily lives. In the world of technology, devices are constantly evolving. For example, a tablet combines the features of a computer and a smartphone, allowing users to browse the internet, watch videos, and create documents on a portable screen. These innovations help us stay connected and access information quickly.