Mobile Computing Advantages and limitations of mobile computing Mobile computing devices: Pagers Cell phones PDAs MP3 players Synchronizing mobile devices with computers Tablet PCs Laptops NEXT SLIDE

Mobile Computing: Is it Right for You? Advantages Convenience Boost productivity Communicate with others anywhere Access to electronic information Limitations Expensive Battery life Small screen display Slower Internet speed NEXT SLIDE

Mobile Computing Devices Pagers Cellular phones MP3 players Personal digital assistants Tablet PCs Laptop computers NEXT SLIDE

Paging Devices Small wireless devices that receive numeric messages (phone numbers) Recent technological advancements enable: Voice paging: Receiving voice messages Alphanumeric paging: Receiving numeric and text messages Two-way paging: Receiving and sending text messages NEXT SLIDE

Cellular Phones Full-featured communication and information storage devices Features include: Auto-redial Call timers Voice-mail Voice-activated dialing Internet access Text messaging Personal information management NEXT SLIDE

Cell Phone Hardware Microprocessor (CPU): Memory: Coordinates data between components Runs the operating system Memory: ROM stores the operating system Internal memory chips store: Contact data Ring tones Images Small application programs Memory Microprocessor NEXT SLIDE

Cell Phone Hardware Input devices: Output devices: Microphone Keypad Graffiti pad Touch-screen Digital camera Output devices: Speaker LCD display Speaker LCD display Keypad Microphone NEXT SLIDE

Cell Phone Features Text messaging: Internet connectivity: Short Message Service (SMS): Send messages up to 160 characters Multimedia Message Service (MMS): Send text, sound, images, and video clips Internet connectivity: Wireless Internet service provider Maximum speed of 14.4 Kbps Micro-browser software NEXT SLIDE

MP3 Players MP3: MP3 player: Format for storing music MP3 player: A small device that stores and plays music Storage space determines the number of songs stored: Memory chips 64 MB to 256 MB Hard drive up to 40 GB Sampling rate NEXT SLIDE

MP3 Flash Memory Used to add additional memory to MP3 players Types of flash memory: Compact Flash: 64 MB to 1 GB Multimedia (MMC) and SmartMedia: 128 MB Secure Digital: 512 MB Sony Memory Stick: NEXT SLIDE

MP3 Ethical Issues 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. Napster: A file exchange site Song files were borrowed from users’ computers (peer-to-peer (P2P) sharing) Sued for copyright infringement NEXT SLIDE

Personal Digital Assistants (PDAs) Small devices that store digital information Known as palm computers or handhelds PDA hardware includes: CPU Operating system Storage capabilities Input/output devices Ports NEXT SLIDE

PDA Input and Output Devices Input devices Touch-screen with stylus Keyboards: On-screen Integrated Folding Digital cameras Output devices LCD displays: Grayscale Color NEXT SLIDE

PDA Processors Popular processors: Comparing processors: Motorola DragonBall Texas Instruments OMAP Intel XScale Comparing processors: Speed Performance: Benchmarking Power consumption NEXT SLIDE

PDA Operating Systems Palm OS Uses less memory than Pocket PC Easy to use graphical interface Features include: Calendar To-do list Contact information Viewing Videos Playing MP3 files Extra application software is available Pocket PC Scaled-down version of Windows More expensive than Palm OS Features include: PDA version of Microsoft Word and Excel Viewing videos Playing MP3 files Extra application software is available NEXT SLIDE

PDA Memory and Storage ROM stores the operating system and the basic programs RAM stores additional applications and data Flash memory is used for additional storage NEXT SLIDE

PDA File Transfer and Synchronization PDA files can be transferred to a desktop using: Flash card readers Cradles Synchronizing updates files on both the PDA and desktop Wireless transfers: IrDA Bluetooth NEXT SLIDE

PDA Internet Connectivity An Internet connection requires a wireless ISP Web pages are accessed using Wireless Application Protocol (WAP) Web clipping enables information from Web pages to be formatted for PDAs NEXT SLIDE

PDA Software and Accessories Standard software: To-do list Contacts manager Calendar Additional software: Microsoft Word and Excel Games Tools References Blueboard: PDA display acts as a drawing board Connects to four other PDAs NEXT SLIDE

Tablet PCs Portable computers with handwriting recognition and speech recognition Two monitor modes: Laptop Tablet NEXT SLIDE

Tablet PC Hardware Tablet PC hardware includes: CPU Operating system Storage capabilities Input/output devices Ports Digital ink technology: Pressure sensitive screen Digital pen NEXT SLIDE

Tablet Software Windows XP Tablet PC is the operating system Applications programs compatible with Windows XP are available NEXT SLIDE

Laptops Also known as notebooks Computing power of a desktop Weigh 6 pounds NEXT SLIDE

Laptop Hardware DVD/CD-RW drives Hard drives RAM Hot-swappable bays: Remove a drive and replace it with another type Keyboard Built-in mouse LCD displays NEXT SLIDE

Laptop Operating Systems 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 NEXT SLIDE

Laptop Ports A full set of ports: Parallel Monitor USB Modem Ethernet Audio jacks FireWire PCI type I/II card slots NEXT SLIDE