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Professionally branded PDF reference sheets and revision guides. Print and use alongside your revision — designed by a Senior Examiner.
9 printable PDF revision sheets are available to Pro subscribers. Binary reference, Python syntax, SQL cards, algorithm guides, exam technique — all professionally designed.
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View pricing →Place value tables, full conversion methods, two's complement with worked examples. A5 double-sided.
Image and audio file size formulas with worked examples. Storage units table. Compression overview.
Variables, data types, selection, iteration, functions, lists, string operations, file handling.
SELECT, WHERE, ORDER BY, INSERT, UPDATE, DELETE with worked examples. Normalisation overview.
Big O notation, binary search trace, bubble sort trace, merge sort trace, DFS vs BFS, Dijkstra's steps.
Complete truth table for all 6 gates, gate rules, De Morgan's laws, Boolean algebra, worked circuit example.
TCP/IP layers, protocol table with ports, network types, topologies, cyber threats, protection methods, legislation.
Command words explained by a Senior Examiner, calculation method, trace table rules, top 10 mistakes that cost marks.
Assignment, input/output, operators, IF statements, all three loop types, subroutines, arrays, string operations.