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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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