Topic 2 - Digital Devices 2 Flashcards
Why are digital devices often developed?
Digital devices are often developed to make everyday tasks easier, quicker or more cost-effective and to provide efficient, improved access data.
What are Digital cameras?
Digital cameras capture images and video digitally using an image sector
How do digital cameras store image and videos digitally?
Digital devices store data as digital data on media such as a memory card or hard drive
Give an example of Digital cameras
Examples
Still and video cameras
What do Navigation Systems use and do?
These devices use GPS
(Global Positioning satellite)
A receiver is used to locate the user’s position on a digital map and provide directions to a given destination
Give an example of GPS and How it is used in the example?
Example
an in - car sat-nave
Which uses GPS location data with a software to provide directions to a given destination when driving
What can communication devices and systems do?
These devices can send and receive analogue or digital data to and from another device
Examples of tradition analogue and a modern digital
Traditional analogue
Examples include phones and faxes
A modern digital
Example is a reader which directs data across a network
What are WiFi dongles and what does it allow?
WiFi dongles are communication devices that allow your PC to communicate with a router wirelessly
What do Data capture and collection system do?
These devices collect and input data through automated systems rather than direct data entry
Examples of Data capture and collection systems
Example
A Bar code Scanner
Which inputs (or reads) a bar code and converts the information into data
Another examples of Data capture and collection systems
Example
An optical mark reader
Which reads pencil or pen marks on specially design printed forms
such as lottery tickets
Examples of Data capture and collection systems and what it does
Example
An EPOS
(electronic point of sale) system
Which records sales and updates stock level
What does RFID reader do?
An RFID reader reads data stored on a smart card by being in close proximity to the card
What are RFID reader often used by?
These are often used by payment cards or for stock control
