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Accessory

Computer inkjet printer Any device added to a computer that performs an additional feature, but is not required. A good example of an accessory is the computer printer, which gives the computer the ability to print, but the computer would still work if it didn’t have the printer. Below, is a listing of computer accessories.
Examples of Computer accessories

Gamepad
Headphones
Joystick
Microphone
MIDI keyboard
Printer
Projector
Remote
Scanner
Speakers
Webcam

Gamepad

1. Game paddle,More commonly known as a game paddle or gamepad, a paddle is an input device commonly used with games that may contain various buttons used to steer and utilize different options in a game. All console game systems utilize a paddle or gamepad for control. The picture shows an example of a game paddle used with the Atari 2600.
2. The term paddle may also be used to describe various handheld devices that are capable of controlling a function on a computer or electronic device.

Headphones

Sometimes referred to as earphones, headphones are a hardware device that either plugs into your computer (line out) or your speakers to privately listen to audio without disturbing anyone else. The picture is an example of a USB headset from Logitech with a microphone and a popular solution for computer gaming.

JOYSTICK
A joystick is an input device that allows the user to control a character or machine in a computer program, such as a plane in a flight simulator. They look similar to the control device you would find on an arcade game, but nearly always include extra buttons for additional functionality. The picture shows the Logitech Freedom 2.4, an example of a joystick.
The first joystick was invented at the U.S. Naval Research Laboratory by C. B. Mirick and patented in 1926. It was a two-axis electronic joystick, similar to the joysticks in use today, and was original designed for remotely piloting aircraft.

Microphone

Computer microphone Sometimes abbreviated as mic, a microphone is a hardware peripheral originally invented by Emile Berliner in 1877 that allows computer users to input audio into their computers. The picture is an example of Blue Microphones Yeti USB Microphone – Silver Edition and an example of a high-quality computer microphone.
What is a microphone used for on a computer?

Below is a short list of all the different uses a microphone could be used for on a computer.
Audio for a video
Voice recorder
VoIP
Voice recognition
Computer gaming
Online chatting
Recording voice for dictation, singing, and podcasts
Recording musical instruments
Where is the microphone plugged into a computer?

The microphone is plugged into the back of desktop computers into the computer sound card microphone port and depending on your computer case may also have a port on the front. On a laptop computer, the microphone is plugged into the microphone port found on the front or side of the laptop.
Note: More advanced microphones like the Yeti microphone pictured above connect to the computer using USB.
Microphone port symbolTip: In all situations, the port should have a symbol that represents a microphone like that shown in the symbol picture shown here and may say “mic” next to the port. If the port connections are color coded it is typically the pink connection. See our sound card definition for further information about these ports for desktop computers.
What are all the symbols used by computers?
How does a microphone input data into a computer?

Because the microphone sends information to the computer, it is considered an input device. For example, when a microphone is used to record a voice or music the information it records can be stored on the computer and played back later. Another great example of how a microphone is an input device is with voice recognition which uses your voice to command the computer at what task to perform.
MIDI

Computer MIDI and keyboard MIDI interface Short for Musical Instrument Digital Interface, MIDI is a standard for digitally representing and transmitting sounds that was first developed in the 1980s. The MIDI sound is played back through the hardware device or computer either through a synthesized audio sound or a waveform stored on the hardware device or computer. The quality of how MIDI sounds when played back by the hardware device or computer depends upon that device’s capability.
Many older computer sound cards have a MIDI port, as shown in the top right picture. This port allows musical instrument devices to be connected to the computer, such as a MIDI keyboard or a synthesizer. Before connecting any MIDI devices to the computer, you need to purchase a cable that takes the MIDI/Game port connection into the standard 5-pin DIN midi connector or a USB to MIDI converter. If you do not have a MIDI port, the most common way today to connect a MIDI device to a computer is to use a USB to MIDI port cable.

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