Specification point:

i) Convert positive denary whole numbers (0-255) into 8-bit binary numbers and vice versa

ii) Add two 8-bit binary integers and explain overflow errors which may occur

iii) Convert positive denary whole numbers (0-255) into 2-digit hexadecimal numbers and vice versa

iv) Convert between binary and hexadecimal equivalents of the same number

v) Explain the use of hexadecimal numbers to represent binary numbers