Personal Digital Devices
- ICT
- Devices and StorageSociety and Uses of ICTCommunicationsComputer systems and mobile technologies
- GCSE
- Edexcel
- Created by: HannahGoodwin
- Created on: 20-04-14 13:13
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Big Bouncy Knitwear Makes Good Tennis-balls
Common Formats
Audio: MP3 and WMA
Still Images: JPEG, GIF, and PNG
Video: MEPG-4, and WMV
Peripheral Devices
There are three types of Peripheral Devices: Storage, Input, and Output.
Flash memory is a peripheral used for portable digital devices because:
- It doesn't loose data when turned off
- It has no moving parts so doesn't damage easily
- Its removable and can be tranferred between devices
Flash Memory Types:
- SD card
- SDHC card
- Micro SD card
- SDXC card
- USB flash drive (memory stick)
Input and Output Devices
Input Peripheral Devices:
- Mouse
- Keyboard
- Game Controller
- Webcam
- Touch Screen
- Microphone
- Joystick
- Graphics Tablet
- Scanner
- Touch-sensitive jog dial
Output Peripheral Devices:
- Speakers
- Docking Station
- Headphones
- Printer
- Headset
- Screen
Connectivity
Data Cable Connection:
- Most common connection
- Mobiles connect to computers via this
Bluetooth:
- Devices communicate using short distance radiowaves
- Most devices are bluetooth enabled or bluetooth dongles can be used as peripherals
- Many peripherals are bluetooth enabled (Speakers, Printers)
WiFi:
- Uses radiowaves
- Longer distances than bluetooth
- Most devices are WiFi enabled
- Allows devices to connect with a computer network and the internet
- Many peripherals are WiFi enabled (Speakers, Printers, Scanners, Digital Projectors)
Syncronising
Syncronising: When two devices, such as a media player and computer, are connected they can automatically exchange data.
Cloud computing services (eg. Apple iCloud) store data files such as music and films on a remote server. This allows file access from any device which can sync with the remote server.
When using iCloud, when you download a song to one device, it automatically downloads onto all devices to save syncing multiple devices with the computer.
Mobile Phones
Core Functions:
- Make voice calls 'on the go'
- Send short SMS
Added Functions (convergence of other devices functions):
- Camera / Videa Camera
- Internet Browsing
- GPS reveiver
- Entertainment
- Productivity
- Data Storage
Security Measures:
- Hide the phone
- Set a PIN, Password, or Biometric lock
- Lock the SIM card
- Record the IMEI number
- Restrict Bluetooth usage (Stops bluejacking)
Personal Computers
Desktop Computers:
- Needs input and output peripherals
- Have hard disk drives and optical drives (CD and DVD drives) as storage
- Powerful processors
- Good connectivity (USB, FireWire, HDMI)
- Can have bluetooth and WiFi cards
- Easy to upgrade and enhance by adding extra features
Laptop Computers:
- Battery Powered
- Monitor, mouse and webcam built in
- Have hard disk and optical drives built in, and SD slots
- Bluetooth and WiFi built in
- Good connectivity (USB, FireWire, HDMI)
- Less easy to dismantle and upgrade
- Notebooks are similar but even more compact
Personal Computers
Netbook Computers:
- Strong and Robust
- Small and lightweight
- Boot up quickly because of Solid State SD cards as storage devices
- WiFi built in
- Dont have hard disk or optical drives
- Designed for using the internet and cloud computing
Tablet Computers:
- Very light and portable
- Battery Powered
- Touch screen interface
- Virtual keyboard
- Bluetooth, Wifi, and 3G connectivity
- Cameras
- Designed for App, Internet and ebook use
- Can download and run apps on mobile phones
Health Risks
Eye Strain: - looking at screen for too long Take breaks
- Sunlight shining on monitor Ajust screen
RSI: - Performing repeated actions Use wrist rests
Take breaks
Neck and Back problems: - Sitting in wrong position Change chair height
- Sitting for a long time Move computer
Pain in knees and legs: - Sitting in wrong position Ajust chair and use foot rest
- Sitting for a long time Take regular breaks
Media Players
Key Features:
- Small, light and easy to carry
- Uses solid state memory
- Long battery life
- Holds alot of media
- Can set Playlists
- Lock function
- Simple interface
Connectivity:
- WiFi
- Bluetooth
- IR (Infrared)
- HDMI
- USB
Security Features
Media Players:
- Locks automatically to prevent unauthorised use
- Reactivates only when correct password is entered
- Encrypts data
- Backup to computer features
- Wireless sharing (Bluetooth)
- Remote management
- Hard reset feature
- Uses antivirus software
Downloading and Streaming
Advantages:
- Saves time (Media played as it arrives)
- Uses less storage space
Disadvantages:
- Cannot keep a local copy to view offline
- Limited availability
- User experience is dependent on connection quality
Game Consoles
Features:
- High Resolution output for HD gaming
- CD, DVD, Blu-ray optical drives
- Connectivity: USB, Bluetooth, WiFi and Ethernet network cable
- Multi-player gaming
Peripherals:
- Wireless contollers
- Wireless headsets
- Hard drive transfer cables
- Webcam / Speaker / Microphone set
- Motion Sensors
- HDTV and HDMI cable
Developments:
- Smart TV for online interactive media and game streaming
- Smartphone and Tablets use HDMI to play games on HD TV
Health Risks
Overuse Injuries: Pressing buttons leads to RSI Set time limits
Take frequent breaks
Obesity: Time gaming is linked to obesity Set time limits
Muscle and Joint Problems: Hours in same position Take regular breaks
Use ergonomic equpitment
Eye Strain: Eyes become fatigued Ajust screen
Take gaze breaks
Signs of Overuse:
- Spend all free time gaming
- Giving up other hobbies
- Not keeping up with homework
- Irritated when not gaming
- Escape to gaming when sad or upset
- Rather play games than spend time with friends
- Lie about how long you spend playing
Home Entertainment
- Digital Television
- Digital Projectors
- Set top box
- Blue-ray Players
- Amplifier
- Speakers
Integration allows access to an entire CD collection in every room via a music server.
DLNA devices are compatible straight out of the box.
Satellite Navigation
Drivers:
- Route Planning
- Check Speed
- Speed Camera Warnings
- Live traffic reports
- Locates conveniences
Health and Safety Risks:
- Distraction
- Device may cause blind spot
- Device is not always correct
Geocaching: An outdoor high tech treasure hunt where players locate hidden containers using GPS enabled devices
Accessibility:
- Some Sat navs provide information such as disabled parking areas and information on local facilities
- Sat navs for blind people will speak at the press of a button
Sat Nav or Smart Phone?
Advantages:
- Likely to always have mobile with you
- Small and light to carry around
- Often cheaper for the app if you already own a smartphone
Disadvantages:
- May have to pay for an expensive app if phone doesn't come with one
- Mobile Internet can be expensive, and roaming charges apply if using abroad
- Runs mobile battery down quickly
- Smartphone apps dont always update quick enough
Technology in Education
- Internet for research
- Laptops, Netbooks and Smartphones allow access to online learning resources
- Apps makes learning more enjoyable
- VLEs allow access to learning resources and allow students to hand in homework at any time
- Ebooks give better access to textbooks
- Online regestrations and admin improve efficiency
- Specialist software improves learning
- Interactive whiteboards enhance the learning experience
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