GCSE EDEXCEL Topic 3A The Internet of Things Also in this topic... GCSE EDEXCEL Topic 3A Common CPU components and their function GCSE EDEXCEL Topic 3A The need for secondary storage GCSE EDEXCEL Topic 3A Common types of storage GCSE EDEXCEL Topic 3A Suitable storage devices & storage media GCSE EDEXCEL Topic 3A Embedded systems