COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

INPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This device has a magnetic coil that vibrates when it is hit by sound waves.
A
Keyboard
B
Trackerball
C
Capacitive Touch Screen
D
Microphone
Explanation: 

Detailed explanation-1: -The microphone capsule contains a small diaphragm connected to a moving coil. When sound waves hit the diaphragm, it vibrates.

Detailed explanation-2: -The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate; and the contact microphone, which uses a crystal of piezoelectric material.

Detailed explanation-3: -A microphone is a form of transducer. That means it converts a sound wave into an electronic signal carried by wire. Generally, when that electric signal is sent through an amplified speaker, it is then converted back into a sound wave.

There is 1 question to complete.