Computer accessories are the devices that are not essential for the normal functioning of a computer but make the use of a computer easier, more comfortable, or more productive. They can be divided into three categories: input devices, output devices, and storage devices.

Input devices are devices that allow you to interact with a computer. The most common input device is the keyboard, but there are many others, such as the mouse, trackball, joystick, touchpad, and scanner.

Output devices are devices that allow you to see or hear what is happening on the computer. The most common output device is …