2. A UDIO Sofía Machado 1.1 Saint Brendans

3. S PEAKER Computer speakers, or multimedia speakers, are speakers external to a computer, that disable the lower fidelity built-in speaker. They often have a low-power internal amplifier. The standard audio connection is a 3.5 mm (approximately 1/8 inch) stereo jack plug often color-coded lime green (following the PC 99 standard) for computer sound cards. A plug and socket for a two-wire (signal and ground) coaxial cable that is widely used to connect analog audio and video components. Rows of RCA sockets are found on the backs of stereo amplifier and numerous A/V products. The prong is 1/8" thick by 5/16" long. A few use an RCA connector for input. There are also USB speakers which are powered from the 5 volts at 500 milliamps provided by the USB port, allowing about 2.5 watts of output power.speakersjack plugPC 99sound cardsanalog RCA connectorUSBvolts

4. DIFERENT TYPES: http://listado.mercadolibre.com.uy/parlantes-de- computadora_DisplayType_G_OrderId_BIDS

5. H EADPHONE Headphones are a pair of small loudspeakers, or less commonly a single speaker, held close to a user's ears and connected to a signal source such as an audio amplifier, radio, CD player or portable media player. They are also known as stereo phones, headsets or, colloquially cans. The in-ear versions are known as earphones or ear buds. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two- way communication, for example with a telephone.loudspeakersearsamplifier radioCD playerportable media player telecommunicationmicrophonetwo- way communicationtelephone

6. D IFERENTES TYPES : sony panasonic JVC bose philips

7. A UDIO C ARD : A sound card (also known as an audio card ) is an internal computer expansion card that facilitates the input and output of audio signals to and from a computer under control of computer programs. The term sound card is also applied to external audio interfaces that use software to generate sound, as opposed to using hardware inside the PC. Typical uses of sound cards include providing the audio component for multimedia applications such as music composition, editing video or audio, presentation, education and entertainment (games) and video projection. Many computers have sound capabilities built in, while others require additional expansion cards to provide for audio capability. computerexpansion card audio signals

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11. S OURCE : http://en.wikipedia.org/wiki/Sound_card http://en.wikipedia.org/wiki/Headphones http://en.wikipedia.org/wiki/Computer_spe aker http://listado.mercadolibre.com.uy/parlant es-de- computadora_DisplayType_G_OrderId_BI DS

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