Input and Output Device Classification

Understanding the difference between input and output devices is crucial for classifying computer hardware correctly.

• Input Devices: Allow users to send data or commands to a computer. Examples include keyboards, mice, microphones, and scanners.
• Output Devices: Present information processed by the computer back to the user. Examples include monitors, printers, and speakers.

Analyzing Device Pairs

Let's evaluate each option based on these definitions:

• Option 1: Keyboard – Output device, Printer – Input device
  Incorrect. A Keyboard is an input device, and a Printer is an output device.
• Option 2: Microphone – Input device, Monitor – Output device
  Correct. A Microphone captures sound waves and converts them into digital signals for the computer (input). A Monitor displays visual information from the computer (output).
• Option 3: Mouse – Output device, Scanner – Input device
  Incorrect. A Mouse is an input device used for pointing and clicking, and a Scanner is also an input device used to digitize documents or images.
• Option 4: Joystick – Output device, Speaker – Input device
  Incorrect. A Joystick is an input device used for gaming or control, and a Speaker is an output device that produces sound.

Therefore, the pair consisting of a microphone as an input device and a monitor as an output device is the only correct classification.