Ict Flashcards
Difference between lossy and lossless
Lossy compression reduces file size by permanently removing original data while lossless reduces file size by removing unnecessary metadata
Q1
C
Q2
D
Q3
A
Q4
Analogue
Digital
Analogue to digital converter
Digital to analogue converter
Q5 difference between data and information
Data is raw facts and figures with no context or meaning while information is data which has been processed and given meaning
Q6
C
Q7
D
Q8
A
Q11
A
Yes/no
Boolean
2000.4
Numeric
A
Charcter
True/false
Boolean
Jones
String
-23
Numeric
BT99QE
String
Male/female
Boolean
Q12
D
Q13
A
JPEG
Joint Photographic Experts Group
PNG
Portable Network Graphics
GIF
Graphics Interchange Format
Q15
B
Q16
A
Q17
D
22khz in hertz
22000hz
Q21
Resolution
Q22 and Q23
B
Q14 d
The hardware he is using doesn’t support the file format
Sample rate converting to digital
The lower the sample rate the less samples taken lowering audio quality therefore the higher the sample rate the better the audio quality
How bitmaps graphics stored
Store details about every individual pixel of the image each pixel could have a different colour
Vectors are stored as
Stored as mathematical objects such as lines curves and shapes
