CAMBRIDGE IGCSE Topic 3.3 Primary storage, RAM and ROM Also in this topic... CAMBRIDGE IGCSE Topic 3.1 Von Neumann architecture CAMBRIDGE IGCSE Topic 3.1 The common characteristics of CPUs CAMBRIDGE IGCSE Topic 3.1 Embedded systems CAMBRIDGE IGCSE Topic 3.3 Common types of secondary storage CAMBRIDGE IGCSE Topic 3.4 Internet Protocol (IP) address, IPv4 and IPv6