GCSE EDEXCEL Topic 2A Signed integers using two’s complement In this video we take a look at how to represent signed binary integers using the two’s complement method. Also in this topic... GCSE EDEXCEL Topic 2A Bit patterns GCSE EDEXCEL Topic 2A Adding two 8 bit binary integers GCSE EDEXCEL Topic 2A Binary shifts GCSE EDEXCEL Topic 2A Converting between denary and 2 digit hexadecimal GCSE EDEXCEL Topic 2A Why hexadecimal is used in computer science