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4.2 Analogue Data and Digital Data - Coggle Diagram
4.2 Analogue Data and Digital Data
Characteristics of analogue data and digital data
Accuracy of information
Analogue data
Accuracy depends on the
sampling technique used
Digital data
High
Replication
Digital data
transmission of data
are possible and easy
Analogue data
Data is lost
Efficiency on transmission
Analogue data
High
Digital data
Low
Mode of data access
Analogue data
Mostly sequential access
Digital data
Direct access is possible
Efficiency on data storage
Analogue data
Low
Digital data
High
Efficiency on data analysis
Analogue data
Low
Digital data
High
Ways of measurement
Analogue data
amplitude and frequency
are measured.
Digital data
(usually ‘0’ and ‘1’)
Conversion of analogue multimedia elements
Audio
MP3
WMA
WAV
RA
Image
a. Resolution
b. Colour depth
c. Compression ratio
Video
a. Video cassette recorders (VCR)
b. Digital video camera
c. Web cam
d. Digital camera