ICT Digital Devices
- Created by: bondj
- Created on: 05-04-15 15:29
View mindmap
- Digital Devices
- The Uses
- Communication
- Texting
- Social networking sites
- Media messaging
- Voice or video calls
- E-mails
- Travel
- Global Positioning System (GPS)
- Tracking the location of cars and vans
- Geotag images
- Leisure
- Displaying photos with digital frames
- Taking photos or videos with digital cameras or camcorders
- Keeping in touch through social networking sites
- Reading books with ebook readers
- Playing games with consoles or computers
- Downloading music
- Communication
- Using Them
- Audience and Purpose
- When companies design a digital device they have to think about who it is for, the AUDIENCE and how they will use it the PURPOSE
- MOBILE PHONES
- A teenager might want internet access for accessing social networking sites
- A business person might wants a qwerty keyboard so they can easily send emails
- An older person may want a larger screen and an easy-to-use interface
- User Requirement: -Some people may want as big a widescreen as possible but they need something small so that they can carry it round in their pocket.
- What a person wants and needs are two completely different things. It is important to weigh up what they want against what they need
- Factors to Consider
- Battery life
- Cost
- Purpose
- User interface
- Connectivity
- Compatability
- Speed of internet connection
- Storage
- Security
- Audience and Purpose
- Common Features
- Processor
- There is a processor in all dogotal devices, from desktop computers to mobile phones
- It controls all the functions of the device
- There are specialist microprocessors for different devices
- Internal Memory
- While the microprocessor is working it needs to store the program instructions and data in its INTERNAL MEMORY.
- Different devices have different amounts of internal memory which is measured in bytes
- BYTE KILOBYTE MEGABYTE GIGABYTE TERABYTE
- They go up in thousands
- Capacity
- Digital devices are storge devices. in addition to their internal memory, digital devices contain components that can store data
- For example, computers contain high capacity hard disk drives to store terabytes of data
- Hard disk drives tend not to be used in portable devices because they contain moving parts and can be easily damages
- Flash memory
- Flash memory is type of peripheral that is ideal for portable devices because....
- It does not lose data when turned off
- It has no moving parts so cannot be easily damaged, SOLID STATE
- It is removable and can be used to transfer data between devices
- Flash memory is type of peripheral that is ideal for portable devices because....
- Types of Flash Memory
- Secure digital card (SD)
- Micro SD cards
- SDXC (extended capacity secure digital card)
- USB flash drive or memory stick
- SDHC (high capacity secure digital card)
- Processor
- The Uses
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