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A keyboard, as found in the Computer Accessories section of Electronics and Computers, is a device used for inputting text, numbers, and commands into a computer. It features various keys, each with specific functions, such as letters, numbers, punctuation marks, and special function keys like control, alt, and delete. Keyboards can be wired or wireless and come in different layouts and sizes, including full-size, compact, and ergonomic designs. They are also compatible with wearable computers and offer features like backlighting and programmable keys for added convenience. In the context of Electronics, Computers, Wearable Computers, and Computer Accessories, a keyboard is an essential input device that enhances the user experience and enables efficient communication between the user and the computer system.