1. Digital Devices and Multimedia
Welcome to Chapter 6 of Visualizing Technology, fifth edition, by Debra Geoghan. This chapter discusses digital devices and multimedia.
Chapter 6
Digital Devices and Multimedia
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Objectives
Explain the Features of Digital Cameras
Compare Methods for Transferring Images from a Digital Camera
Identify Several Ways to Edit and Print Photos
Recognize Important Audio File Types
Describe Several Ways to Create Videos
Compare Portable Media Players, Tablets, and Smartphones
Chapter Six Objectives Are:
Explain The Features Of Digital Cameras.
Compare Methods For Transferring Images From A Digital Camera.
Identify Several Ways To Edit And Print Photos.
Recognize Important Audio File Types.
Describe Several Ways To Create Videos.
Compare Portable Media Players, Tablets, And Smartphones.
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3. Explain the Features of Digital Cameras
Chapter 1 will examine the key features of digital cameras, including resolution, storage, zoom, and lenses. It also discusses the digital camera options available between point-and-shoot and digital single-lens reflex (DSLR) models.
Objective 1
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4. Digital Cameras Resolution
Resolution is the quality of the image
Measured in pixels
Higher resolution means more detail; you can make larger prints
The higher the resolution, the larger the file size
When choosing a digital camera, there are three features to consider: resolution, storage, and lenses. Resolution pertains to the quality of the image and is measured in pixels; higher resolution means more detail. The higher the resolution, the larger the file. Many cameras allow you to select the image quality. Setting the camera to take lower-resolution pictures will allow you to fit more images on your memory card.
Objective 1
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5. Digital Cameras Storage
Internal – usually small
Erasable and reusable
Removable memory cards
Inexpensive
Can be read by most computers and printers
Large capacity – flash cards hold up to 100 GB
Digital cameras can store images internally or on removable memory cards. The internal memory on most cameras is relatively small. If your camera uses memory cards to store the images, you can take the card out of the camera and put it in a card reader attached to your computer or a photo printer. The type of card you use will depend on the camera. Flash memory cards come in capacities up to 100 GB in size depending on the type of card.
Objective 1
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6. Digital Cameras Lenses
Zoom
Optical
Digital
Both
Macro setting
Telephoto
Wide-angle
Digital cameras have the ability to zoom in on an object. Optical zoom uses a zoom lens to change the focal length of the camera, which makes objects appear closer, telephoto, or farther away (wide angle). Some cameras have a macro setting, or close-focus, for taking pictures of objects that are very close. Digital zoom crops the image and enlarges a portion of it; this results in a zoomed image of lower quality.
Objective 1
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7. Digital Cameras Types of Cameras
Basic point-and-shoot
Simplest; fewest features
Least expensive
Advanced point-and-shoot
Moderately priced
Better zoom
Macro functions
Viewfinders
Auto focus
There are many types of digital cameras. Basic point-and-shoot cameras are the simplest and least expensive. Advanced point-and-shoot cameras are moderate in price, features, and quality. They include features like zoom, viewfinders, and special effects.
Objective 1
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8. Digital Cameras Types of Cameras
Compact system cameras (CSC)
Advanced point-and-shoot
Interchangeable lenses
Manual controls
Capture HD videos
Digital single-lens reflex (DSLR)
Traditional type camera
Manually change lenses
Manual focus and exposure
Best for action shots
Compact system cameras are advanced point-and-shoot cameras with interchangeable lenses and the ability to capture HD video.
Digital single-lens reflex cameras (DSLRs) connect various types of lenses to the camera, can be manually focused, and are very expensive.
Objective 1
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9. Compare Methods for Transferring Images from a Digital Camera
Objective 2 compares methods for transferring images from a digital camera. It will also discuss wireless transfer technology and digital camera connection options.
Objective 2
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10. Transferring Images Memory Cards, USB, FireWire, and Wireless
Store images
Can be inserted into a computer or printer
USB or FireWire
Connect the camera directly to a computer; this requires device drivers for the computer to talk to the cameras
Wireless-enabled digital cameras
Transfer photos using Wi-Fi or cellular wireless technology
Memory cards store images on cards that can be inserted into a computer or printer. USB or FireWire can be used to connect the camera directly to a computer. Device drivers are needed for the computer to talk to the camera. If you are using Windows, you have the option of tagging the images with keywords and erasing them from the memory card. Wireless-enabled digital cameras can transfer photos using Wi-Fi or cellular wireless technology.
Objective 2
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11. Transferring Images Transferring to the Cloud
Mobile device cameras upload photos directly to the Internet or the cloud
Multiple platforms (Android/Windows) may upload to:
Instagram
Dropbox
Photobucket
Facebook
iOS devices:
iCloud
Cameras that are part of a mobile device, such as a tablet or cell phone, let you upload photos directly to the Internet or the cloud. Android devices upload to Photobucket, or Facebook. iOS devices use iCloud to sync among multiple devices. Using an iPad, you can , message, or tweet photos, or you can use iCloud to sync a photo to multiple devices. Dropbox and Instagram enable you to store photographs using various platforms.
Objective 2
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12. Identify Several Ways to Edit and Print Photos
Objective 3 identifies several ways to edit and print photos.
Objective 3
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13. Editing and Printing Photos
Editing software
Photoshop, Adobe: $$$
Online editing
Snapfish, Shutterfly, Flickr
Include basic editing tools
Options to share and purchase photos
Editing software at home is available in simple, free programs or expensive, professional programs such as Adobe Photoshop. Another option is a photo editing website, such as Snapfish, Shutterfly, and Flickr. These websites include online storage, basic editing tools, and options to share and purchase photos.
Objective 3
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Image File Formats
There are numerous file formats used for digital photos. Some common graphic file formats include Joint Photographic Experts Group, Windows Bitmap, Tagged Image File Format, and RAW.
Objective 3
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Printing Photos
PictBridge
Industry standard
Allows camera to connect directly to printer via USB or a special dock
Kiosks
Photo kiosks in retail stores
Built-in editing features
Connect your camera via USB or use a memory card
PictBridge is the industry standard that allows a camera to connect directly to a printer via USB or a special dock. Photo kiosks in retail stores have built-in editing features; you can connect your camera with USB or a memory card.
Objective 3
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16. Online Printing and Sharing
Personal image sharing sites
Snapfish
Shutterfly
Photo-sharing community
Flickr
Owned by Yahoo!
Geotagging
Creative Commons
Websites such as Snapfish and Shutterfly, which are personal sharing sites, let you share photos with friends and family. Their main goal is to get you to purchase photos and other merchandise.
Objective 3
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17. Recognize Important Audio File Types
Objective 4 will help you to recognize important audio file types and compare various media player programs and speech recognition software.
Objective 4
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Audio File Types
Codecs
Compression algorithms that reduce the size of digital media files
DMCA: Digital Millennium Copyright Act
Made it illegal to remove DRM from protected files
Codecs are compression algorithms that reduce the size of media files.
The DMCA: Digital Millennium Copyright Act made it illegal to remove DRM from protected files.
Objective 4
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Audio File Types
Audio File types
MP3: Moving Picture Experts Group (MPEG-1 Audio Layer-3)
AAC: Advanced Audio Coding
WMA: Windows Media Audio
DRM: Digital rights management
MP3 (Moving Picture Experts Group Layer-3 Audio), is an audio file type used for music files. Advanced Audio Coding (AAC) is the default file type used by Apple’s iTunes. Windows Media Audio (WMA) refers to synthesized digital media files. Digital rights management (DRM) is a technology applied to digital media files to pose restrictions on the use of these files.
Objective 4
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Media Software
Two common media programs are Apple iTunes and Windows Media Player. iTunes is a program used to organize music and shop for new music, video, or other media files. Windows Media Player is included with Windows. Like iTunes, it can be used to organize and play all your media files. Media Player has the ability to stream media files and burn CDs of your music.
Objective 4
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Music in the Cloud
Cloud
Pandora
Spotify
Grooveshark
Rhapsody
Slacker Radio
Last.fm
Social media
Facebook
Twitter
Connecting your music to the cloud allows you to listen to your favorite songs on any device with an Internet connection. Most services are free but offer premium plans that eliminate ads and add more features. Connections to Facebook, Twitter, and other services make sharing and listening to music a social experience.
Objective 4
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22. Speech Recognition or Voice Recognition
Features
Converts spoken words to text
Interacts using voice commands
Often built into video games
Train the program to recognize your speech patterns
SIRI
iPhone’s intelligent personal assistant app
Uses natural language
Works with built-in apps and some third-party apps
SIRI learns speech patterns without tedious training
Speech recognition software converts spoken words to text, which allows you to interact with your system through voice commands. Current versions of Windows and OS X have built-in speech-recognition software. To use some speech-recognition software successfully, you need to train the programs to recognize your speech patterns.
Newer Apple iPhones include an intelligent personal assistant app, referred to as SIRI, which allows you to speak using natural language to send messages, make calls, and ask questions.
Objective 4
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23. Describe Several Ways to Create Videos
Objective 5 describes several ways to create videos.
Objective 5
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Videos
Webcams and video conferencing
Two-way interaction
Virtual meetings
Connect classrooms
Collaboration
Talk to family
Take videos
An estimated one-third of Internet traffic is video, and that number is expected to rise. There are several ways to create videos. Webcams, web cameras used in live video chats, support two-way interaction such as meetings and conversations.
Objective 5
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Videos
Screen Capture
Creates a video of what happens on your computer
How-to videos
Screenr; Screencast-O-Matic
Webcasting
One-way process
Broadcasting on the web
Live or prerecorded
Streaming
Screen captures create a video of what happens on your computer.
Webcasting, a one-way process, refers to a live or prerecorded broadcast, known as a video stream or streaming.
Objective 5
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26. Video Cameras Capture Action on the Go
Features
Megapixels
Storage
Zoom
Recording options
Built-in hard drives to store the video
Edit
Share Videos
The features of video cameras—megapixels, storage, and zoom—are similar to regular digital cameras. Some video cameras are small, lightweight, and durable and enable you to record your activities from your perspective.
Objective 5
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27. Video Editing Software
Basic features
Capture
Edit
Export video
Additional features
Fun transitions
Animations
Captions
Music, and more
Burn to DVD or upload to web
Video editing software comes in a variety of forms. Some are free, such as Microsoft Movie Maker and Apple iMovie, and others are expensive, such as Adobe Premiere and Sony Vegas Pro. All video editing software will capture, edit, and export video, but some have features, including captions, transitions, animations, music and more. You can burn to DVD or upload to the web. YouTube is the most popular video sharing site on the Internet.
Objective 5
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28. Compare Portable Media Players, Tablets, and Smartphones
Objective 6 compares portable media players, tablets, and smartphones.
Objective 6
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Analog vs. Digital
Analog
Converts data signals into continuous electronic waves or pulses
Telephones
Televisions
CRT monitors
Digital
Data represented by a series of 0s and 1s
Signals can carry more data and are less prone to interference
The difference between analog and digital is in the way the data is encoded and transmitted. In analog devices, data is converted into continuous electronic waves or pulses, which analog devices such as telephones, televisions, and CRT monitors translate back into audio and video signals. In digital devices, audio or video data is represented by a series of 0s and 1s. Digital signals, which carry more data, are less prone to interference than analog signals.
Objective 6
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30. MP3 or Portable Media Players
Handheld devices allow you to carry thousands of songs, podcasts, photos, videos, and games
A portable media player, also called MP3, is a handheld device that allows you to carry thousands of songs, podcasts, photos, videos, and games that you can listen to, watch, and play wherever you are. Apple and other companies, such as Samsung and Sony, each have their own hard drive and flash-based media player.
Objective 6
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Smartphones
Multifunction devices that blend phone, PDA (personal digital assistant), and portable media player features
Run a mobile operating system
iPhone
Android
BlackBerry
Windows
Have the ability to download mobile apps
Smartphones are multifunction devices that blend phone, PDA (personal digital assistant), and portable media player features. They are popular in both the business and personal markets. Basically, smartphones are small handheld computers. The current 4G network has data transfer speeds that rival home connections. This enables users to watch TV, video chat, and play online games from their phone.
Objective 6
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Tablets
Operating systems
iOS
Android OS
Windows OS
Purchase apps
iOS Apple Store
Google Play Store
A tablet falls somewhere between a notebook and a smartphone. These handheld devices can be multifunctional devices or dedicated e-readers and cost under $100 to nearly $1,000. Tablets have an LCD screen, a fairly long battery life, built-in Wi-Fi, and possibly 3G or 4G cellular connectivity, which makes them great for travel. There are vast collections of apps that you can download to your devices; the Apple App Store has more than 1,000,000 apps.
Objective 6
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Questions
Are there any questions?
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