Computer Science
Fourth Level · Curriculum for Excellence
Fourth Level Computing Science is essentially the National 5 course in preparation. Pupils write and refine programs in a text-based language, usually Python, using arrays, nested loops, functions with parameters, string operations and file handling, and follow a full design, implement, test, evaluate cycle.
Computer systems content covers binary and two's complement, floating-point representation, storage of images and sound, processor structure, and the environmental and security implications of computing. Database and web development units cover SQL queries, HTML, CSS and JavaScript basics.
The exam rewards precision (correct syntax, correct terminology, complete test tables) so working through past-paper style questions with feedback is the most effective form of support at this level.
Important Topics
- Software Design & DevelopmentAnalysis, design, implementation, testing and evaluation of a working program.
- Programming TechniquesArrays, nested loops, functions with parameters, string handling and file access.
- Data RepresentationBinary, two's complement, floating point, and storage of graphics and sound.
- Computer ArchitectureProcessor, memory, buses and how instructions are fetched and executed.
- Database DesignTables, keys, relationships and SQL select, insert and update queries.
- Web Design & DevelopmentHTML structure, CSS styling and JavaScript for simple interactivity.
- Security & ImpactCyber threats, legislation, and the environmental impact of computing.
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