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Digital Devices and Multimedia
In this chapter, we discuss digital devices and multimedia content and how we use these every day.
55
Computer Networking
Undergraduate 1
11/07/2011

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Term
section 1 Summary
Definition
The the four main type of digital cameras are basic and advanced point-and-shoot,prosumer,and DSLR. Each type is progressively more expensive and complex. Resolution is the measure of pixels in an image, and higher-resolution cameras can take higher -quality pictures. Storage includes internal camera storage includes internal camera storage as well as flash memory cards . Zoom an lenses are important features that can make object appear closer ( telephoto) or farther away ( wide-angle)
Term
Multimedia
Definition
which is the integration of text,graphics,video,animation, and sound.
Term
Resolution
Definition
is the measure of the number of pixels in an image and is expressed in megapixels.
Term
Zoom
Definition
can have either optical , digital or both.
Term
Optical zoom
Definition
uses a zoom lens to change the focal length of the camera, making objects appear closer ( telephoto) or farther (wide-angle) away.
Term
Digital zoom
Definition
Digital zoom crops the image and enlarges a portion of it, resulting in a zoomed image of lower quality.
Term
Storage
Definition
Digital cameras can store images internally or on removable memory cards.
Term
Prosumer
Definition
refers to someone that's not a professional photographer but has enough interest or expertise to require a camera with some professional features.
Term
point-and-shoot
Definition
The simplest ,least expensive digital camera type and has the fewest features.
Term
shutter lag
Definition
the time between pressing the button and the camera snapping the picture.
Term
digital singel -lens reflex Camera (DSLRC)
Definition
A digital camera that uses interchangeable lenses , can be manually focused, and cost thousands of dollars. D-SLR cameras give the user more control than point-and shoot cameras.
Term
1st thing you need to know sec1
Definition
RESOLUTION determines the quality of the print you can make the size of the file.
Term
2nd thing you need to know sec1
Definition
OPTICAL ZOOM is better than digital zoom .
Term
3rd thing you need to know sec1
Definition
POINT-AND-SHOOT CAMERAS are the the easiest to use .
Term
DSLRS
Definition
take the best picture and cost the most.
Term
section 2 summary
Definition
Flash memory cards can be removed from a camera and plugged directly into a card reader in a computer or at a kiosk in a store. most cameras can be connected to a computer via USB or firewire cable. The image can then be copied to a CD or computer or made into prints . Wireless-enabled digital cameras can also transfer photos using WiFi technology.
Term
tagging
Definition
Labeling images or files with keywords to make it easier to organize and search for them.
Term
1st thing you need to know sec 2
Definition
MEMORY CARDS can be transported from camera to computer.
Term
2nd thing you need to sec 2
Definition
USB and FIREWIRE connect a camera directly to a computer.
Term
3rd thing you need to know sec2
Definition
WIRELESS TRANSFER uses a WiFi network to transfer photos to your computer.
Term
section 3 summary
Definition
At home, you can print photos by first transferring the images to a computer or directly connection a PicBridge-enable types ,and online services allow you to upload image to be printed that can be mailed to the home or picked up at a local retailer.
Term
PictBridge
Definition
is an industry standard that allow a camera to connect directly to a printer, usually by USB connection or special dock.
Term
1st thing you need to know sec3
Definition
PHOTO EDITING SOFTWARE can be used to enhance and fix your photos.
Term
2nd thing you need to know sec3
Definition
PRINTING PHOTO AT HOME is easy but you can be expensive
Term
3rd thing you need to know sec3
Definition
KIOSKS in stores allow you to edit and print better quality photos less expensively than you could print them at home .
Term
4th thing you need to know sec3
Definition
ONLINE PRINTING AND SHARING SITES enable you to easily edit and share your photos and are the least expensive way to print quality photos.
Term
section 4 summary
Definition
the most common audio file types include MP3, which is the most common format for music files, and AAC, which is primarily used by apple iTunes. Another common audio file is a MIDI file, which is often used for synthesized music in video game.
Term
MP3
Definition
MPEG-1 Audio Layer 3. A common audio file type used for music file. MP3 is a lossy form of compression that works by removing some of the detail . There is trade-off between file size and quality.
Term
Digital rights management
Definition
is a technology that's applied to digital media file, such as music, ebook, and video , to impose restrictions on the use of these files.
Term
Media Software
Definition
is used to organize and play multimedia files, such as music, video , and podcast; organize your songs into playlist for working out,driving or dancing : and find new music that you might like using the online store feature .
Term
Speech recognition
Definition
A feature that allows users to use a computer without a keyboard by speaking commands. it can be used for such tasks as automatically providing customer service though a call center, dialing a cell phone , or even dictating a term paper l
Term
1st thing you need to know sec4
Definition
MP3 is most common music file type
Term
2nd thing you need to know sec4
Definition
DIGITAL RIGHT MANAGEMENT imposes restriction on the use of DRM-protected media file.
Term
3rd thing you need to know sec4
Definition
MEDIA PROGRAMS ,such as iTunes and Windows Media Player ,organize and play multimedia files .
Term
4th thing you need to know sec4
Definition
allows you to interact with your systems using your voice commands.
Term
section 5 summary
Definition
its's estimated that one-third of all internet traffic is video, and that number is only expected to rise. Creating , viewing , and sharing video isn't very different from handling any other media , except that video file tend to be larger and require more storage and bandwidth.
Term
Screen capture
Definition
software tools allow you to create a video of what happens on your computer screen.
Term
Webcams
Definition
A specialized video camera that provides visual input for online communication , such as Web conferencing or chatting.
Term
Webcasting
Definition
Broadcasting on the web
Term
Streaming
Definition
means that the media begins to play immediately as it's being received and doesn't require the whole file to be downloaded to you computer first.
Term
1st thing you need to know sec5
Definition
SCREEN CAPTURE SOFTWARE records what happens on your computer screen.
Term
2nd thing you need to know sec 5
Definition
WEBCAMS allows you to video conference with others.
Term
3rd thing you need to know sec5
Definition
WEBCASTING is broadcasting on the Web
Term
4th thing you need to know sec5
Definition
YOUTUBE is the most popular video sharing site on the web
Term
section 6 summary
Definition
portable media players are small handheld devices that play music, video,photos and may also have games , internet access, and other features. PDAs are handhelds computers with a business focus . They include calendars , contact list, and other business tools . Smartphones are cell phones with PDA functions built in. Many smartphones also have features of portable media player and are true convergence devices.
Term
MP3 player
Definition
A handheld device that allows you to carry with you thousands of songs and podcasts, so you can listen to them wherever you are . Also called portable media player if it supports photos and videos
Term
Portable media player
Definition
A handheld device that allows you to carry with you thousands of songs and podcasts ( and perhaps photos, video, and games ), so you can listen to them wherever you are. also called MP3 player.
Term
PDA ( personal digital assistants )
Definition
and smartphones are small handheld computer that differ from portable
Term
e-waste
Definition
(electronic waste )Old computers, cell phones, TVs, VCRs,and other electronic device, some of which are considered hazardous .
Term
Smart phones
Definition
A multifunction device that blend phone, PDA, and portable media player feature. Popular in both the business and personal markets.
Term
1st thing you need to know sec6
Definition
PORTABLE MEDIA PLAYER can carry music, videos, photos, and game.
Term
2nd thing you need to know sec6
Definition
FLASH-BASED media player have small capacities-up to 32 GB .
Term
3rd thing you need to know sec6
Definition
HARD DRIVE media player have larger capacities - up to 160 GB
Term
4th thing you need to know sec6
Definition
MULTIFUNCTION DEVICES, such as PDAs and smartphones, combine the features of different devices.
Term
section 7 summary
Definition
Digital devices have become integral to many different careers. one notable example is nursing and other health care professionals who rely on handhelds devices use a variety of tools and media to create their designs; engineers use handhelds devices for a variety of scientific purposes : and photojournalslists document the news stories of the day in photos .
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