Speakers

These speakers come in different sizes and are made for different computing systems such as P.C, tablet, netbook and also for mobile phones.
Headphones
Headphones are an output device that can be plugged into different computer systems such as p.c, laptop, ipod and mobile phone.
Headphones are made to be placed in your ears so that the sound being played through the headphones is for the listeners pleaser only and nobody else. Most headphones are made to go to a certain amount of volume so that it will not go over its dB limit.
Monitor

A monitor is the visual hardware and software part of the computer that lets you do everything.
Monitotrs are also known as screens or visual display unit.
Printer
A printer is an output device for a computer, laptop, tablet or netbook that lets you print your work out.
You can print your work or image out in black and white or in colour.
Some printers can print documents that are stored on storage devices such as a memory card, usb flash drive, digital camera and scanners.
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