Digital tech
What is digital technology?
Digital technology is any technology controlled using digital instructions.
Including software, hardware, digital media, digital devices, digital toys/accessories, contemporary and emerging communication technologies.
What is data?
Data is information gathered and input into a computer.
Where is data stored?
Data is stored in disk drives, solid state drives, USB memory sticks and floppy disks.
Where is data processed?
Data is processed by the central processing unit (CPU).
What is an autonomous vehicle?
An autonomous vehicle is a car or truck that uses computers and sensors to drive itself without human help.
What are some elements to autonomous vehicles?
Usage of sensors/cameras = they collect data to enable vehicle safety and to ensure that the vehicle stays in the right lane.
Usage of AI = advanced algorithms allow vehicles to adapt to different circumstances.
Usage of a radar = radars allow objects to be detected via radio waves and help to determine presence, distance, angle and velocity.
What is a bitmap?
A bitmap is a method of storing images using pictures. Bitmaps are also known as raster images.
What is a bitmap made up of?
A bitmap is made up of bits (binary digits) that define the colour, size, position of an image.
What is the name for a common file format used to save images?
Bitmap/BMP
What are some common image formats?
JPEG, PNG, GIF, TIFF, BMP
What is a pixel?
A pixel is a term used to describe a picture element
How are digital images created?
Digital images are created by digital cameras or through photos, art that has been scanned into a computer/created using graphic software.
What is digital data?
Digital data is information that has been converted into a binary code of "0s" and "1s" so it can be read, stored, and processed by computers
Where is data sourced from?
Mobile devices, credit/debit cards, digital cameras/sensors, applications, surveys, company sales, government departments
What are integrity checks?
An integrity check involves confirming data has not been tampered with and is not corrupt. Computers do this by using checksums (validation codes) and by providing hash code values.
How should I keep my data safe?
Encryption, secure passwords (8 or more characters, combination of letters and numbers), secure buildings and limiting data access
What is a character set?
A character set is a defined list of characters represented by numbers which is recognized by computer hardware and software.
What does the ASCII character set stand for?
ASCII stands for American Standard Code for Information Interchange