What are input devices their types?

What are Input Devices?

Input devices are hardware components that allow users to input data and interact with a computer system. They translate data or commands into machine-readable formats, enabling communication between humans and computers. These devices play a crucial role in feeding data into a computer for processing, which can then be displayed through output devices.

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Definition of Input Devices

Input devices are electromagnetic hardware tools that accept data or instructions from the outside world, convert it into a format understandable by computers, and send it for processing. They serve as the interface between the user and the computer. Once the data is input, it can be stored in the computer’s memory for further processing. After processing, output devices deliver the results.

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Types of Input Devices

1. Keyboard

A keyboard is the most common input device for entering data. It includes keys for letters, numbers, and symbols, and additional keys for specific functions.

• Features:

  • Standard layouts: QWERTY, AZERTY, or DVORAK.
  • Available in sizes with 84, 101/102, 104, or 108 keys.
  • Connectivity: USB or Bluetooth.

• Types of Keys:

  1. Numeric Keys: Enter numbers and move the cursor.
  2. Control Keys: Includes keys like Ctrl, Alt, Insert, Delete, and Arrow keys.
  3. Special Keys: Keys like Enter, Shift, Caps Lock, and Tab.
  4. Function Keys: F1 to F12, used for specific tasks.

• Characteristics:

  • Affordable and widely available.
  • Can replace mouse functions using arrow keys.
  • Divided into four components: Main keys, cursor keys, numeric keypad, and function keys.

• Types of Keyboards:

  • QWERTY Keyboard
  • AZERTY Keyboard
  • DVORAK Keyboard