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Devices that are used to input data and instructions into the computer or any other computational device. Which translates numbers, letters and actions that user understands into a form that computer can process.

E.g.: When using a command prompt or application software, you typically use a keyboard to enter text and a mouse to issue commands. Keyboard and mouse are the most commonly used input devices.

In this chapter, I have included following different types of input devices.

• Keyboard
• Mouse
• Touch Screen
• Trackball & Joystick
• Mic
• Scanners
• Bar Code Reader
• Smart Card Reader
• Recognition Devices