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What does all data need to be to be processed by a computer?
Converted to binary
What do the 0s and 1s in binary represent?
0s - Off, 1s- On
What do computers use binary for?
All operations
What are the 0s and 1s called?
Bits
How many bits in a byte?
8
What is hexadecimal?
A base-16 number system
Why is it beneficial to use hexadecimal?
Hexadecimal uses less digits to represent the same number, making it easier to read and less prone to errors when being copied
What are 3 examples of where hexadecimal is used?
Representation of colour values, error messages, IP addresses
What are the binary adding rules?
0+0 = 0, 0+1 = 1, 1+1 = 0 carry 1, 1+1+1 = 1 carry 1
When does an overflow error occur?
When the result of binary addition exceeds the maximum value that can be represented
What is a binary shift to the left equivalent to?
Multiplication by 2
What is a binary shift to the right equivalent to?
Division by 2
What happens in two’s complement?
The leftmost digit becomes negative
Note 
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