• list primitive data types

• represent positive integers in binary

• use sign and magnitude and two’s complement to represent negative numbers in binary

• add two unsigned binary numbers

• represent positive numbers in hexadecimal

• convert between denary, binary and hexadecimal number systems

• define bits and bytes, and use names, symbols and prefixes appropriately

• know how to use the ASCII table to represent text as binary

• explain why Unicode was introduced, and its advantages

• differentiate between the character code for a digit and its pure binary representation

• use fixed-point binary to represent numbers with a fractional part

• convert a positive floating-point number to denary and vice versa

• normalise a positive and negative floating-point number

• use arithmetic, logical and circular shifts

• use arithmetic operations and Boolean operations AND, OR and XOR

• show the effect of a logical shift left and shift right of a number of bits

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