Data representation Flashcards
Computers store data in binary because….
It is easier to represent only 2 states using electrical components
What base is binary?
Base 2
What base is decimal?
Base 10
What base is hexadecimal?
Base 16
What unique digits can be used in binary?
0, 1
What unique digits can be used in decimal?
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
What unique digits can be used in hexadecimal?
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
Why use binary?
It is easy to represent 0 and 1
Why use decimal?
The number system we are taught from an early age and the one we are all familiar with.
Why use hexadecimal?
Represent larger binary numbers using hexadecimal and it is easier to read.
What is the impact of colour depth on file size?
More bits per pixel, larger file size but greater number of colours that can be stored.
What is the impact of resolution on file size?
Greater resolution means a larger file size but also greater quality
What is naturally produced sound?
Analogue
Define sampling rate
The number of samples taken per second (1HZ = 1 sample per sound)
Define sampling resolution
The number of bits per samples
