COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

OUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
description of headphones
A
a pair of small loudspeakers worn over the ears
B
relatively cheap and reliable, can display text and graphics in a wide range of colours, quiet, do not waste paper.
C
might break or need replacing, can only indicate 2 states such as on /off
D
Business documents can be scanned then edited.
Explanation: 

Detailed explanation-1: -Headphones are a pair of small loudspeaker drivers worn on or around the head over a user’s ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound.

Detailed explanation-2: -Over-ear headphones Also called “circumaural headphones, ‘’ these headphones have thicker headbands and larger ear cups that fully encompass both ears. They’re also notably bulkier than other types of headphones.

Detailed explanation-3: -The driver unit. Once the electrical signal makes its way through the wires and into your headphones, it reaches what’s called a driver unit. There are three types of driver units: the dynamic driver, the planar magnetic driver, and the electrostatic driver.

Detailed explanation-4: -: a support framework with attached electronic devices that is worn on the head: such as. : an earphone or a pair of earphones held on the head by a band.

Detailed explanation-5: -Earbuds are basically a pair of tiny speakers that you wear inside your ears. At low volumes, they’re useful little devices. But playing loud music so close to your eardrums can cause permanent hearing loss.

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