A Computer Keyboard is an essential peripheral device used to input text, commands, and data into a computer system. Available in both wired and wireless versions, keyboards typically connect to a computer via a USB cable or Bluetooth. The most common layout is QWERTY, though alternative layouts like AZERTY or Dvorak are also available for specialized needs. The construction of computer keyboards varies, with mechanical switches offering tactile feedback and durability, while membrane switches are quieter and more affordable. Some keyboards also utilize scissor switches, which combine the benefits of both mechanical and membrane technologies. Ergonomic designs are common for users seeking a more comfortable typing experience, reducing wrist strain over extended use. In addition to basic functions, many modern keyboards include backlit keys for visibility in low-light conditions, programmable keys for custom commands, and multimedia controls for easy access to volume and playback options. Some models also feature spill-resistant designs, ensuring protection against accidental liquid spills. Keyboards are compatible with various operating systems, including Windows, macOS, and Linux, making them versatile for different types of computers. Depending on the model, a keyboard can vary in size, from compact mini keyboards to larger full-size versions that include a number pad. With options from brands like Logitech, Microsoft, and Razer, users can select a keyboard that best suits their needs, whether for office work, gaming, or general use.