CIS 102 Introduction to Hardware and Software

Chapter 2 Input and Outputpart 3 output devices

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Chapter 6: Supporting Input, Output, and Multimedia Devices

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Audio Input and Output

• A sound card is an expansion card that records sound, saves it in a file on your hard drive, and plays it back

• A computer’s CD-ROM or DVD-ROM drive is attached to the sound card internally

• A sound card can be an expansion card or embedded on a motherboard

Internal Sound cards

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Chapter 6: Supporting Input, Output, and Multimedia Devices

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Sampling and Digitizing the Sound

• The analog-to-digital converter digitizes the analog sound flowing to sound cards

• Several factors in the sampling process affect the quality of the sound during playback:– Sampling rate– Audio resolution– Mono or stereo recording

Microphone In

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Line In or Digital In

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Firewire and USB connection

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Line Out or Digital Out

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Chapter 6: Supporting Input, Output, and Multimedia Devices 11

MP3 Players• A popular audio compression

method is MP3, a method that can reduce the size of a sound file to make it significantly smaller and easier to transfer to and from computers and audio devices, without much loss of quality

• An MP3 player is a device that plays MP3 files

MP3 Cycle

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Internal sound card

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External sound card

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Surround Sound

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Sound Quality

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Sound Blaster

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API Support

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Speakers

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Speaker System

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Active and Passive Speakers

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Power Output

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Signal-To-Noise Ratio

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Frequency Response

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Headphones

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Headsets

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Earbuds

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Noise Cancellation

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Frequency Response

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Videoconferencing

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Work with Video

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Speed and Resolution

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Software

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Motion Sensing Capabilities

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Wireless Web Cameras

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Digital Camera Capabilities

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Other Output DevicesWhat is force feedback? Sends resistance to joystick or wheel in response to

actions of user

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Gaming Devices

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Types of Connectors

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Game Pad

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Joystick

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Racing Wheel

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Wii 7th Generation Game System

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Wii Name

• Code Name “Revolution” until April 27, 2006• First home console marketed outside Japan

without company name• The two lower case I’s represent people

standing side by side – players gathering together

• Emphasizes it is for ‘Everyone’

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Bluetooth Wireless Devices

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About Bluetooth Devices

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Add Bluetooth to Computer

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Common Bluetooth Devices

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Non-Bluetooth Wireless Devices

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