Computer Science 8520/1 June 2021

AQA GCSE Computer Science (8525 & 8520) Jun 2021

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The exam assesses computational thinking and problem-solving skills for GCSE Computer Science, focusing on structured programming, algorithm development, and debugging. Topics include abstraction, decomposition, trace tables, and subroutine creation for tasks like card conversion. It covers binary and linear search comparisons, image representation using bitmaps, and calculations involving color depth and file size. Students design algorithms for validating machine code and duplicate detection. Additional tasks address logic gates, Boolean expressions, sewing machine pattern programming, and the creation of structured iterations. Emphasis is placed on problem-solving, logical reasoning, and algorithm optimization. Keywords: GCSE Computer Science, algorithms, logic gates, structured programming, debugging, image representation, binary search.