A-level Computing/AQA/Print version/Unit 2

A-level Computing A-level Computing/Print version __TOC__ __NOEDITSECTION__ A-level Computing is an A-level course run for students in the UK Note: current version of this book can be found at http://en.wikibooks.org/wiki/A-level_Computing/AQA Authors Authors Book Overview Unit 2 - Summary Fundamentals of Computer Systems Hardware and software Classification of Software System software Application software Generations of programming language Fundamental Hardware Elements of Computers Logic Gates Boolean gate combinations Building circuits Gate conversion Boolean algebra Simplifying boolean equations Boolean identities De Morgan's Laws Hardware and software Internal and external hardware components of a computer Functional characteristics of a processor Structure and role of the processor Machine code and processor instruction set The Fetch–Execute cycle and the role of registers within it Hardware Devices Input and output devices Input devices Output devices Secondary storage devices Structure of the Internet Internet, Intranet and World Wide Web Packet switching IP addresses Domain names URIs Client server model Protocols TCP/IP protocol stack Webpage Design Web page construction HTML & style sheets Design decisions Legal and ethical issues Legislation Code of conduct Hacking Digital rights management Robotics Emerging technologies References