Explanation:
The correct answer is B: Trackpad.
A trackpad is a pointing device that is commonly found on laptops and some desktop computers. It allows users to control the movement of the cursor on the screen by touching the surface of the trackpad with their fingers. Here is a detailed explanation:
- Trackpad: A trackpad, also known as a touchpad, is a flat surface that is sensitive to touch. It is typically located below the keyboard on a laptop and can be used to control the movement of the cursor on the screen.
- Cursor movement: When you touch the trackpad with your finger and move it across the surface, the cursor on the screen also moves accordingly. The trackpad senses the movement of your finger and translates it into cursor movement.
- Touch gestures: In addition to basic cursor movement, trackpads often support various touch gestures. These gestures can be used to perform actions such as scrolling, zooming, and right-clicking without the need for physical buttons.
- Advantages: Trackpads are popular because they are compact, convenient, and provide a more natural way of interacting with the computer compared to traditional mice. They also eliminate the need for a separate mouse and can be used comfortably on the go.
- Alternative pointing devices: While a trackpad is the most common pointing device on laptops, other options include a trackball, which is a stationary ball that is rolled with the fingers, and an optical mouse, which uses a laser or LED to track movement on a surface.
- Conclusion: In conclusion, a trackpad is a pointing device that allows users to control the cursor on the screen by touching the surface with their fingers. It is commonly found on laptops and provides a convenient and intuitive way of interacting with the computer.