Written specifically for the National Curriculum Attainment Target 5: Information Technology Capability, the material presented here covers the syllabus extensions for students who wish to obtain a GCSE in Information Systems. The text covers: basic computer operation principles, hardware devices, the different types of software, problem-solving techniques, elements of programming in BASIC, Pascal and Logo, systems analysis and design, applications of computers, and social issues relating to computers. It is supplemented with numerous diagrams and self-test questions. Answers are provided at the end of each chapter. A number of model GCSE examination questions are also included.