ICT Topic 1
- Created by: Feona Donnelly-Worthington
- Created on: 12-04-17 12:17
Digital devices
-Satelite navigation (GPS)
-Television
-Smartphone
-Personal Computers
-Video Games
-MP3 Players, etc...
-Cameras
-Camcorders
Communication
-Social networking sites
-Text messages
-Emails
-Video calls
-Voice calls
-Instant messaging
Leisure
-Watching HD filmms/TV programmes
-Downloading music
-Listening to music with personal media players
-Playing games
-Reading with ebook readers
-Taking/displaying photos or videos
Factors to consider when choosing a device
-Battery life
-Cost
-Purpose
-Connectivity
-Security
-Support offered
-Storage
-Compatibility with other devices
Features and functions
Feature: what a certain device includes
Function: what the certain feature does
Internal memory
Processor needs to store the program instructions and data in its internal memory
Different devices have different amounts of internal memory
Measured in bytes
Flash memory
-Type of peripheral
-Ideal for portable device
-Doesnt lose data
-No moving parts (solid state)
-Used to transfer data
Types of flash memory
-SD card
-Micro SD cards
-USB flash drive/memory stick
-SDHC
Input devices
Input device: gives instructions and input data to the device
-Mouse
-Keyboard
-Webcam
-Microphone
-Joystick
-Scanner
Output device
Output device: User can see/hear information after it has been processed
-Headset
-Headphones
-Speakers
-Printer
-Docking station
Mobile phones
Most widely used personal digital device.
Multifunctional:
- Camera/video camera
- Internet browsing
- GPS receiver (navigation)
- Entertainment
- Data storage
- Can be used on the move
- People can send messages and use social networking
Mobile phone security
-Hide the phone
-Set a PIN/password
-Restrict bluetooth usage
Desktop computer
-Input/Output peripherals
-Hard disk/optical drives, CD/DVD for storage
-Powerful procesors
-Good connectivity
-Easy to uprgrade
Laptop
-Battery powered
-Monitor, mouse, webcam built in
-Hard disk/optical drives and CD/DVD for storage
-Bluetooth and WiFi
-Good connectivity
Netbook computer
-Strong, robust
-Small, lightweight
-WiFi built in
-Designed for cloud computing
Tablet computer
-Light, portable
-Battery powered
-Touch screen
-On-screen keyboard
-Camera
-Playing media
Ergonomics
Science of designing equipment so that it is comfortable and user friendly
Health Risks
Eye strain:
- Looking at screen too long
- Artificial light on monitor
RSI:
- Performing repeated actions
Neck and back problems
- Sitting in worong position
- Sitting in same position for long time
Knee/Leg pain
- Wrong position
- Same position for long time
Cameras/Camcorders
-Zoom (optical/digital)
-Take photos/videos
-Store files with SD cards
-Crop/edit files
-View files on TV using HDMI ports
-View videos/images on LCD screen
Digital/Optical zoom
Digital: enlarges part of image (blurred)
Optical zoom: moves lens closer so light is brought to focus
Media players
-Small, light, easy to carry
-Solid state memory
-Long battery life
-Hold a lot of media
-Set playlists
-Lock to prevent accidental damage
Digital Rights Management
DRM prevents you from making copies of audio/video files. Prevents copyright holder from illegal copying.
Streaming
Advantages:
- Saves time -continuous stream of data played
- Uses less storage space
Disadvantages:
- Can't keep a local copy for offline viewing
- Limited availability
- Dependent on good connection quality
Games consoles
Peripherals:
-Wireless contollers
-Wireless headsets
-Webcam/speaker/microphone
-Motion sensors
-HD equipment
Signs of overuse
Spend all your free time gaming
Giving up hobbies
Grades are falling
Irritated/Agitated when not playing
No more socialising
Home entertainment systems
Digital television
- High quality
- More channels than analogue
- Interactive features
- Digital radio stations
Internet
- Smart TVs/Games consoles allow users to stream films /TV channels
- Apple TV allows users to access media in iCloud
Blu-ray
- Play HD movies
- Store up to 50GB
Sat-nav
Use GPS to plan routed and give directions, used by drivers, pedestrians and geocachers.
- Warns drivers about speed cameras
- Live traffic reports, avoid congestion
- Scenic routes or conveniences, service stations
- Used to find pedestrians way into cities, etc...
Health and Safety risks:
- Take eyes off road
- Cause a blind spot
- Lead drivers down hard-to-navigate roads/incorrect destination
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