A-level Computing/AQA/Paper 2

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A-level Computing : Paper 2

Fundamentals of data representation	Number systems · Number bases · Bits and bytes · Units · Unsigned_binary · Unsigned binary arithmetic · Twos complement · Binary fractions · Rounding errors · Absolute and relative errors · Underflow and overflow · Character form of decimal digit · ASCII and unicode · Error checking · Units of information · Binary number system · Information coding systems · Representing images, sound and other data · Images · Bitmaps · Vectors · Comparison between vector and bitmaps · Sounds · Analogue and digital · Sampled sound · Sound compression · Nyquist-theorem · Sound synthesis · Streaming audio ·

Fundamentals of computer systems	Relationship between hardware and software · Classification of software · System software · Role of an operating system (OS) · Classification of programming languages · Types of program translator · Logic gates · Boolean gate combinations · Building_circuits · Simplifying boolean equations · Boolean identities · De Morgan's Laws · Gate conversion · Uses of gates ·

Fundamentals of computer organisation and architecture	Internal hardware components of a computer · The stored program concept · Structure and role of the processor and its components · The processor and its components · The Fetch-Execute cycle and the role of registers within it · The processor instruction set · Addressing modes · Machine-code/assembly language operations · Interrupts · Factors affecting processor performance ·

External hardware devices	Input and output devices · Input devices · Output devices · Secondary storage devices ·

Consequences of uses of computing	Legal and ethical issues · Legislation · Code of conduct · Hacking · Digital rights management · Robotics · Emerging technologies

Fundamentals of communication and networking	Communication methods · Communication basics · Network topology · Types of networking between hosts · Wireless networking · The Internet and how it works · Internet security · TCP-IP · Standard application layer protocols · IP address structure · Subnet masks · IP standards · Public and private IP addresses · Dynamic Host Configuration Protocol (DHCP) · Network Address Translation (NAT) · Port forwarding · Client server model · Thin versus thick client computing

Fundamentals of databases	Conceptual data models and entity relationship modelling · Relational databases · Database design and normalisation techniques · Structured Query Language (SQL) · Client server databases · Big Data

Fundamentals of functional programming	Basics of functional programming · Writing functional programs

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