Section Seven - Data Representation Flashcards
Fill in the gaps:
1) apply (2) operators to (3
(1) Logic Gates
(2) Boolean Operators
(3) inputs
Complete the sentence:
NOT gates takes a single Input…
…and gives a single output
What is a feature of a NOT gate?
The output is always the opposite value to the Input
Finish the sentence:
AND gates take two inputs…
…and give one output
Finish the sentence:
OR gates take two inputs…
…and give one output
What is the size of a bit (b)?
A single binary digit (1 or 0)
What is a parity bit used for?
To check for errors in binary numbers?
What is a Binary Shift?
Used to Multiply or Divide numbers, every bit is moved along to the left or the right
When do Overflow Errors occur?
When a number has too many bits?
What are Images stored as?
A series of pixels
What increases the file size of a image?
Increasing the Colour Depth and Resolution
What do devices need to display images?
Metadata
What does Metadata include?
File format, height, width, colour depth and resolution
What factors affect the size and quality of sound files?
Sampling intervals
Sampling frequency
Sample size
Bit rate
What are the two types of compression?
Lossless and Lossy