Multiple Choice Questions on Keyboards, Mice, Microphones, and Cameras

📚 Quick Study Guide

• 🖱️ Mouse: A hand-held pointing device used to interact with a computer's GUI. Key features include left-click (selection), right-click (context menu), and scroll wheel (navigation).
• ⌨️ Keyboard: An input device with keys that users press to enter text and commands into a computer. Types include QWERTY, AZERTY, and DVORAK layouts.
• 🎤 Microphone: A transducer that converts sound waves into electrical signals. Used for audio recording, voice communication, and speech recognition. Types include dynamic, condenser, and ribbon microphones.
• 📸 Camera: A device for capturing still images or videos. Digital cameras use image sensors (e.g., CCD or CMOS) to convert light into digital data. Key specifications include resolution (megapixels), frame rate (fps), and lens aperture.
• ⌨️ Keyboard Shortcuts: Combinations of keys that perform specific commands (e.g., Ctrl+C for copy, Ctrl+V for paste).
• 🖱️ Mouse DPI (Dots Per Inch): A measure of mouse sensitivity. Higher DPI means the cursor moves farther with the same physical movement.
• 🎤 Microphone Polar Patterns: Directional sensitivity of a microphone (e.g., cardioid, omnidirectional, bidirectional).
• 📸 Camera ISO: Sensitivity of the image sensor to light. Higher ISO allows for shooting in low-light conditions but can introduce noise.

Practice Quiz

1. Which of the following is NOT a common function of a mouse?
   1. A. Left-click (Selection)
   2. B. Right-click (Context Menu)
   3. C. Scroll Wheel (Navigation)
   4. D. Power On/Off
2. What is the most common keyboard layout used today?
   1. A. AZERTY
   2. B. DVORAK
   3. C. QWERTY
   4. D. Colemak
3. Which type of microphone is generally more sensitive and requires phantom power?
   1. A. Dynamic
   2. B. Ribbon
   3. C. Condenser
   4. D. Carbon
4. What does DPI stand for in relation to a mouse?
   1. A. Dots Per Interval
   2. B. Digital Pixel Input
   3. C. Dots Per Inch
   4. D. Digital Point Index
5. Which camera setting controls the sensitivity of the image sensor to light?
   1. A. Aperture
   2. B. Shutter Speed
   3. C. ISO
   4. D. White Balance
6. Which microphone polar pattern is most sensitive to sound from all directions?
   1. A. Cardioid
   2. B. Bidirectional
   3. C. Omnidirectional
   4. D. Supercardioid
7. Which keyboard shortcut is commonly used to copy selected text?
   1. A. Ctrl+X
   2. B. Ctrl+V
   3. C. Ctrl+C
   4. D. Ctrl+Z