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The hardware components are divided into four groups:

                                                                Hardware



                                           Input        Processing      Output        Storage
                                          Devices         Device        Device         Devices

                  Input Devices

                  Input devices are hardware components that enable users to input data and commands into a
                  computer. They are essential for user interaction with computers and other digital systems. Let’s
                  explore some commonly used input devices.
                     Keyboard: The keyboard  is essential for
                     interacting with computers, allowing us to type,
                     enter commands, and input data. Most use the
                     QWERTY layout, though alternatives like AZERTY
                     and Dvorak exist. Keyboards can be wired  via
                     USB or wireless using Bluetooth, offering more freedom. When a key is pressed, it signals the
                     computer to display the corresponding character or function on the screen instantly, ensuring
                     accurate input.

                                   Mouse: A mouse  is a common  input device used to control the cursor on a
                                 computer  screen.  It  can  be  wired  or  wireless,  often  using Bluetooth.  A  typical
                                 mouse has left-click, right-click buttons, and a scroll wheel. These buttons allow
                                 you to perform various actions in software. The mouse makes it easy to select
                                 options, move the cursor, and drag and drop items. The scroll wheel helps you
                                 navigate through long documents or web pages quickly.
                     Scanner: A scanner  is an input device that  converts  physical
                     documents, images, and photos into digital files. It lets users capture
                     handwritten or printed materials and transfer them to a computer
                     for saving, editing, or sharing. Scanners are widely used in offices,
                     homes, and businesses for document and image scanning.

                                               Touchpad: Touchpads are an alternative to the traditional mouse,
                                               commonly found on laptops. They allow users to control the cursor’s
                                               movement on a screen by using their fingers or a stylus on a flat
                                               surface.

                     Light Pen: A light pen is a pen-shaped pointing device with a
                     light-sensitive tip that lets users interact directly with a computer
                     screen. By pointing, users can select or draw on the screen. Light
                     pens are  often  used in applications like banking  to  digitally
                     capture customer signatures, offering precision and ease for tasks
                     requiring direct screen interaction






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