Topic 2 Data Flashcards
2.1 (178-191), 2.2 (192-201), 2.3 (202,204)
1
Q
A
2
Q
A
3
Q
How many colours can be represented using four bits
A
16 colours
4
Q
How many colours can be represented using 24 bits (3 bytes)
A
over 16 million colours.
5
Q
How do you work out how many colours can be represented (bit patterns)?
A
2number of bits
6
Q
What is a signed number?
A
A format of number that can has a range of neg and pos values.
with a range of -127 to +128 (when 1 byte)
7
Q
What is an unsigned number?
A
A format of number that only has non-neg values.
that ranges from 0 to 256 (when 1 byte)
