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is a typewriter-style device which uses an arrangement of buttons or keys to act as electronic switch .A keyboard typically has characters engraved or printed on the keys

a device that converts electrical energy into sound waves and is worn over or inserted into the ear

is a pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display, which allows a smooth control of the graphical user interface

A camera is an optical instrument for recording and capturing images, which may be stored locally, transmitted to another location, or both.

Flash memory is a type of nonvolatile memory that erases data in units called blocks. Flash memory keeps data for an extended period of time

is a telecommunication medium used for transmitting moving images in monochrome (black-and-white), or in color, and in two or three dimensions and sound.

A printer is an external hardware output device that takes the electronic data stored on a computer or other device and generates a hard copy of it.

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

a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A telephone converts sound, typically and most efficiently the human voice,

A smartphone is a mobile personal computer with a mobile operating system with features useful for mobile or handheld use