Theme 2: Working smarter Topic 12: Explore portable devices and learn more about connections Chapter...
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Transcript of Theme 2: Working smarter Topic 12: Explore portable devices and learn more about connections Chapter...
Theme 2: Working smarter
Topic 12:
Explore portable devices and learn more about connections
Chapter 1.4. Page 61 – 75
Mobile technology
Laptops
• Computer with miniaturised parts
• More expensive than normal computers
• Difficult and expensive to upgrade
Discuss: What are the advantages of using a laptop?
Personal Digital Assistant (PDA) (Palmtop)
• Small device that acts like an electronic diary.
• Also contains word processing and spreadsheet programs (less functions than standard versions)
• Name 3 advantages of a PDA compared to a laptop.
• Name 4 tasks for which a PDA can be used.
Portable media devices
• Media files = photos, music, video
• When stored as compression files, they can be played by various devices.
• Types of compression files:– MP3 (most popular format)– ama– aac
Information on MP3-players
• Can store from 200 to 12 000 songs (CD stores 20 – 30 songs)
• iPod, manufactured by Apple, is very popular
• Certain flash memory devices can also play MP3’s
Video devices
• Video files are larger than sound files – thus 20 GB hard drives in these devices.
• Have small LCD-screens.
• Can be connected to a TV.
Remember to use good
batteries in portable devices!
Smartphones
• A cellphone with additional facilities– Internet; e-mail; extra programs; MP3-player;
PIM-programs– Camera/video recorder– Modem for a laptop– Connect without cables
3G and 4G
• Cellular communications technology – your cellphone can be used to– Watch TV– Do video conferencing– Connect to the Internet– Receive E-mail
• You pay only for the amount data received.
• 4G – even faster than 3G
Connecting devices
• Media files (music, videos, movies, photos, books, magazines) can become too large for portable device.
• Must be able to transfer data to computer. – Cables (USB or FireWire)– Wireless (Bluetooth or Infrared)
USB Symbol for USB-port
Mini-USB(Usually used for cameras, MP3-players, etc.)
Full size USB(Usually used for printers, scanners, portable hard drives, etc.)
The end that connects to
the computer
USB hub
• Plugs into 1 USB port, and gives access to 4, 6 or 8 USB ports.
• Some must be connected to a power supply.
Wireless connectivityBluetooth
• Short range radio connection between devices– Does not have to be in line of sight of the other
device
– Can transmit through non-metal objects like walls
– Most effective within 10 meter
• Cellphone and hands-free headset• Cellphone, keyboard, GPS, mouse connected to
computer• Two cellphones – exchange photos without having
to pay.
Wireless connectivityInfrared
• Very short distances between two devices in line of sight.
• Cellphone connected to computer and other cellphones.
• Wireless mouse and keyboard.
Implications and issues of portable computer technology
• What are the advantages of making use of portable computer technology?
Implications and issues of portable computer technology
• How does the availability of portable technology influence the following aspects of our lives?
• Health
• Security
• Etiquette
• Economy