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Technology in Action - Flashcards

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Class:CIS 120 - Survey Computer Info Systems
Subject:Computer & Information Science
University:Central Arizona College
Term:Spring 2010
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Advantages and limitations of mobile computing Mobile computing devices Cell phones PDAs/smartphones Portable media players Synchronizing mobile devices with computers Subnotebooks Notebooks Chapter topics include: Advantages and limitations of mobile computing Mobile computing devices Pagers Cell phones PDAs Portable media players Synchronizing mobile devices with computers Subnotebooks Notebooks
dvantages Convenience Boost productivity Communicate with others anywhere Access to electronic information Limitations Expensive Short battery life Small screen display Slow Internet speed Mobile computing devices—portable electronic tools such as cell phones, PDAs, and notebooks—are changing our day-to-day lives, allowing us to communicate with others, remain productive, and access a wide array of information no matter where we are. Still, there is a downside associated with mobile computing. Because mobile devices have been miniaturized, they’re more expensive and less rugged than stationary desktop equipment. In addition: Battery life limits the usefulness of mobile devices. The screen is small on many devices. The speed of connection to the Internet currently is slower than for desktop systems.
Input devices Microphone Keypad Graffiti pad Touch screen Digital camera Output devices Speaker LCD display The input devices for a cell phone are primarily the microphone and a keypad. Some phones feature the Palm Graffiti pad as well as touch-sensitive screens that allow you to input data. In addition, more and more cell phones include digital cameras. Cell phone output devices include a speaker and an LCD display. Higher-end models include full-color, high-resolution plasma displays. Some cell phones include two displays: an outside LCD display you can see when the phone is folded and a separate display inside.
Translate the user’s commands into instructions for the processor Symbian Windows Mobile OS X One popular operating system for smartphones is the Symbian OS. Many PDAs/smartphones use the Windows Mobile operating system. Apple’s iPhone uses a version of the OS X operating system. These operating systems are necessary for translating the user’s commands into instructions for the processor.
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Analog-to-digital converter chip converts voice sound waves into digital signals. Digital signal processor compresses the signal so it can be sent to another phone. Digital data is transmitted as radio waves. Digital signal processor decompresses incoming calls.
Text messaging Short Message Service (SMS) Sends messages of up to 160 characters Free SMS information Multimedia Message Service (MMS) Sends text, sound, images, and video clips
Wireless Internet service provider Internet connectivity plans, usually known as data plans Speeds of 200–300 Kbps Microbrowser software Difficult to display Web pages on the small screen without horizontal scrolling
Checking e-mail is a popular feature. Special “push” technology delivers e-mail to a cell phone. Viruses can target cell phones. Antivirus software for mobile devices is available.
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MP3 Format for storing music Portable media player (PMP) Small device that stores and plays music
Used to add additional memory to portable media players Nonvolatile Noiseless Uses very little power Software enables transfer of audio and video files
Is it illegal to download MP3 files? MP3.com Song files are on a public server. Permission is given by the artist or recording company to place the files on the server. A fee is paid to download a file. The original Napster A file exchange site Song files were borrowed from users’ computers (peer-to-peer [P2P] sharing). Sued for copyright infringement
Music without any digital rights Can be moved freely from system to system May be part of a subscription service
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Distributing non-music MP3 files over the Internet Podcasts can be information, books on tape, audio plays, etc. People can listen when they wish. iPod synchronization transfers new content.
Small devices that store digital information PDA/smartphone hardware includes CPU Operating system Storage capabilities Input/output devices Ports
Input devices Touch screen with stylus Keyboards Graffiti text system Output devices LCD displays
Popular processors Samsung SC Texas Instruments OMAP Intel XScale Comparing processors Speed Performance Benchmarking Power consumption
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Main OS competitors Palm OS Windows Mobile Blackberry OS OS X versions Symbian OS OS features include Calendar To-do list Contact information Viewing videos Playing MP3 files
ROM stores the operating system and the basic programs. RAM stores additional applications and data. Flash memory is used for additional storage
PDA/smartphone files can be transferred to a desktop using Flash card readers Cradles Synchronizing updates files on both the PDA/smartphone and desktop Sync cables Windows Vista Sync Center Wireless transfers IrDA Bluetooth
Standard software To-do list Contacts manager Calendar Additional software Microsoft Word, Excel, Outlook, and PowerPoint Games Tools References
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Cell phones with PDA/smartphone capability PDAs with cell phone capability Smartphones
Sony Portable Reader System Holds 160 e-books Nokia n800 Internet Tablet Uses Skype for voice communication Subnotebooks Lightweight, powerful computing abilities
Also called laptops Computing power of a desktop Weigh more than tablet PCs
Dual-core CPUs Blu-ray/DVD/CD-RW drives Hard drives RAM Keyboard Built-in mouse LCD displays
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Slightly slower than desktop CPUs Dual-core CPUs Difference in speed is less noticeable Windows Vista Allows for RAM to be used more efficiently
Same operating systems as those found on desktops Power management Shuts down the hard drive Turns off the monitor Puts the computer into standby mode
Lightweight, portable computers Can be used clipboard style Integrated keyboard Most weigh just over 3 pounds Digital ink technology Pressure-sensitive screen Digital pen
Windows Vista is now the operating system. Digital ink Handwriting recognition Application programs compatible with Windows Vista are available.
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Gives details on Display brightness Battery status Power management plant Wireless network connections External displays Presentation systems (projectors) connected
A full set of ports: Monitor USB Modem Ethernet Audio FireWire PCI type I/II card slots DVI IrDA
Most notebooks have integrated support for wireless connectivity. The 802.11g WiFi wireless standard is most common. 802.11n is gaining in popularity. Bluetooth chips
Batteries lighter than previous generations No “memory effect” Battery rated at 5 A-hrs can provide 5 amps of current for an hour AC/DC or DC/DC converter
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Desktop Better value in terms of computing power for your money More expansion possibilities More reliable Lasts longer Notebook Portable
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 Advantages and limitations of mobile computing Mobile computing devices Cell phones PDAs/smartphones Portable media players Synchronizing mobile devices with computers Subnotebooks Notebooks Chapter topics include:
Advantages and limitations of mobile computing
Mobile computing devices
Pagers
Cell phones
PDAs
Portable media players
Synchronizing mobile devices with computers
Subnotebooks
Notebooks
 dvantages Convenience Boost productivity Communicate with others anywhere Access to electronic information Limitations Expensive Short battery life Small screen display Slow Internet speed Mobile computing devices—portable electronic tools such as cell phones, PDAs, and notebooks—are changing our day-to-day lives, allowing us to communicate with others, remain productive, and access a wide array of information no matter where we are.
Still, there is a downside associated with mobile computing. Because mobile devices have been miniaturized, they’re more expensive and less rugged than stationary desktop equipment. In addition:
Battery life limits the usefulness of mobile devices.
The screen is small on many devices.
The speed of connection to the Internet currently is slower than for desktop systems.
 Input devices Microphone Keypad Graffiti pad Touch screen Digital camera Output devices Speaker LCD display The input devices for a cell phone are primarily the microphone and a keypad. Some phones feature the Palm Graffiti pad as well as touch-sensitive screens that allow you to input data. In addition, more and more cell phones include digital cameras.
Cell phone output devices include a speaker and an LCD display. Higher-end models include full-color, high-resolution plasma displays. Some cell phones include two displays: an outside LCD display you can see when the phone is folded and a separate display inside.
 Translate the user’s commands into instructions for the processor Symbian Windows Mobile OS X One popular operating system for smartphones is the Symbian OS. Many PDAs/smartphones use the Windows Mobile operating system. Apple’s iPhone uses a version of the OS X operating system. These operating systems are necessary for translating the user’s commands into instructions for the processor.
 Analog-to-digital converter chip converts voice sound waves into digital signals. Digital signal processor compresses the signal so it can be sent to another phone. Digital data is transmitted as radio waves. Digital signal processor decompresses incoming calls.  
 Text messaging Short Message Service (SMS) Sends messages of up to 160 characters Free SMS information Multimedia Message Service (MMS) Sends text, sound, images, and video clips  
 Wireless Internet service provider Internet connectivity plans, usually known as data plans Speeds of 200–300 Kbps Microbrowser software Difficult to display Web pages on the small screen without horizontal scrolling  
 Checking e-mail is a popular feature. Special “push” technology delivers e-mail to a cell phone. Viruses can target cell phones. Antivirus software for mobile devices is available.  
 MP3 Format for storing music Portable media player (PMP) Small device that stores and plays music  
 Used to add additional memory to portable media players Nonvolatile Noiseless Uses very little power Software enables transfer of audio and video files  
 Is it illegal to download MP3 files? MP3.com Song files are on a public server. Permission is given by the artist or recording company to place the files on the server. A fee is paid to download a file. The original Napster A file exchange site Song files were borrowed from users’ computers (peer-to-peer [P2P] sharing). Sued for copyright infringement  
 Music without any digital rights Can be moved freely from system to system May be part of a subscription service  
 Distributing non-music MP3 files over the Internet Podcasts can be information, books on tape, audio plays, etc. People can listen when they wish. iPod synchronization transfers new content.  
 Small devices that store digital information PDA/smartphone hardware includes CPU Operating system Storage capabilities Input/output devices Ports  
 Input devices Touch screen with stylus Keyboards Graffiti text system Output devices LCD displays  
 Popular processors Samsung SC Texas Instruments OMAP Intel XScale Comparing processors Speed Performance Benchmarking Power consumption  
 Main OS competitors Palm OS Windows Mobile Blackberry OS OS X versions Symbian OS OS features include Calendar To-do list Contact information Viewing videos Playing MP3 files  
 ROM stores the operating system and the basic programs. RAM stores additional applications and data. Flash memory is used for additional storage 
 PDA/smartphone files can be transferred to a desktop using Flash card readers Cradles Synchronizing updates files on both the PDA/smartphone and desktop Sync cables Windows Vista Sync Center Wireless transfers IrDA Bluetooth  
 Standard software To-do list Contacts manager Calendar Additional software Microsoft Word, Excel, Outlook, and PowerPoint Games Tools References  
 Cell phones with PDA/smartphone capability PDAs with cell phone capability Smartphones  
 Sony Portable Reader System Holds 160 e-books Nokia n800 Internet Tablet Uses Skype for voice communication Subnotebooks Lightweight, powerful computing abilities  
 Also called laptops Computing power of a desktop Weigh more than tablet PCs  
 Dual-core CPUs Blu-ray/DVD/CD-RW drives Hard drives RAM Keyboard Built-in mouse LCD displays  
 Slightly slower than desktop CPUs Dual-core CPUs Difference in speed is less noticeable Windows Vista Allows for RAM to be used more efficiently  
 Same operating systems as those found on desktops Power management Shuts down the hard drive Turns off the monitor Puts the computer into standby mode  
 Lightweight, portable computers Can be used clipboard style Integrated keyboard Most weigh just over 3 pounds Digital ink technology Pressure-sensitive screen Digital pen  
 Windows Vista is now the operating system. Digital ink Handwriting recognition Application programs compatible with Windows Vista are available.  
 Gives details on Display brightness Battery status Power management plant Wireless network connections External displays Presentation systems (projectors) connected  
 A full set of ports: Monitor USB Modem Ethernet Audio FireWire PCI type I/II card slots DVI IrDA  
 Most notebooks have integrated support for wireless connectivity. The 802.11g WiFi wireless standard is most common. 802.11n is gaining in popularity. Bluetooth chips  
 Batteries lighter than previous generations No “memory effect” Battery rated at 5 A-hrs can provide 5 amps of current for an hour AC/DC or DC/DC converter  
 Desktop Better value in terms of computing power for your money More expansion possibilities More reliable Lasts longer Notebook Portable  
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