ICT PDD's
- Created by: DharikaJethwa
- Created on: 12-05-17 08:57
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- Personal Digital Devices
- Use of digital devices
- They allow people to communicate
- Through messaging, voice calls, social media etc
- Devices are made for leisure
- Playing games, taking photos, listening to music
- Travel
- People use devices on the move, for sat navigation and global positioning, geotagging images
- They allow people to communicate
- Using digital devices
- Audience and purpose
- They have to think about who is using the device (audience)
- A teenager might want internet access for social networking sites
- How are they using the device (purpose)
- They have to think about who is using the device (audience)
- Wants and needs
- Important to think about the user requirements
- I want a faster processor, I need something small and easy to carry
- Important to think about the user requirements
- Factors to consider
- Cost, compatibility, storage, purpose, security
- Audience and purpose
- Common features
- Processor
- Processor in all devices, it controls the functions
- Internal memory
- needs to store the program instructions and data in its internal memory
- 1 Kilobyte (KB) =1000 Bytes
- 1 Megabyte (MB) = 1000 kilobytes
- 1 Gigabyte (GB) = 1000 megabytes
- 1 Terabyte (TB) = 1000 gigabytes
- 1 Gigabyte (GB) = 1000 megabytes
- 1 Megabyte (MB) = 1000 kilobytes
- Flash memory
- Peripheral that is ideal for portable devices
- It doesn't lose data when turned off
- Has no moving parts so it doesn't damage easily (SSD)
- Removable, used to transfer data
- Types: SD card, USB, SDHC (high capacity card)
- Processor
- Input and output devices
- Three types of peripherals: storage devices, input devices and output devices
- Input devices: mouse, keyboard, webcam, microphone etc
- Output devices: speakers, headphones, printer, screen etc
- Connectivity
- Data cable connection
- most common is the USB cable
- Bluetooth
- Connect wirelessly, communicate over short distances
- Wi-Fi
- Another wireless method, over long distances
- Synchronising
- automatically exchange data
- Cloud synchronisation
- on a remote sever, automatically downloaded all your files onto all devices
- Data cable connection
- Mobile phone 1
- Core functions
- allow people to communicate over voice calls
- using short messages (SMS)
- Added functions
- multifunctional devices, phones can perform functions on laptops, game consoles, this is called convergence
- Functions: camera, internet browsing, entertainmentetc
- Core functions
- Mobile phone 2
- Digital rights management (DRM)
- DRM software to prevent you from making copies to audio and video files, protects the copyright owner
- Connectivity
- Wi-Fi, bluetooth, infrared, HDMI port and USB port
- Download and streaming
- Most users download, if they are connected to wi-fi, they can stream media
- Advantages
- Saves time, uses less storage space
- Disadvantages
- Cannot keep a local copy, limited availablitiy for streaming, user experience is connection dependent
- Advantages
- Most users download, if they are connected to wi-fi, they can stream media
- Digital rights management (DRM)
- Game consoles 1
- Peripherals
- Wireless controllers, wireless headsets, hard drive transfer cable, webcam, motion sensors, high definition
- Features: connectivity, online multiplayer, CD/Blu-ray
- Current developments:smart TV and smartphones and tablets
- Peripherals
- Game consoles 2
- Overuse injuries, causes: RSI, prevention: time limits, breaks, using a different controller
- Obesity, causes: the amount of time spent on the compeer is linked with obesity, prevention: time limits, physical acitivies
- Muscle and joint problems, causes: impacts on posture and spine, prevention: breaks, adjust furniture to suit height, ergonomic chair if possible
- Eye strain, causes: becomes fatigued, blurry vision and headaches, prevention: adjust screen for contrast and brightness, look at other things and take breaks
- Effects on behaviour
- Violent games causes aggression
- 10 hours of shooting games equal less brain activity in the thinking and emotional region
- Governments have banned violent games
- Video games are classified in the same ways as films
- Home and entertainment systems
- Digital televisions
- more channels, high quality, digital radio stations, more accessible, interactive features and greater control
- Digital televisions
- Use of digital devices
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