Cambridge AS & A Level Computer Science
ASAS Level subject content
Overview
Topics 1-12: studied by all candidates; Paper 1 examines topics 1-8, Paper 2 topics 9-12, and all of it is assumed knowledge for Papers 3 and 4.
In this topic
Lessons
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Buses and ports
40 min
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CPU architecture: Von Neumann, Harvard and registers
45 min
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Processor performance
40 min
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The fetch-execute cycle and interrupts
50 min
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Embedded systems, monitoring and control
40 min
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Input and output devices and how they work
40 min
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Primary memory: RAM, ROM, buffers and cache
40 min
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Secondary storage: hard disks, solid-state drives and optical discs
40 min
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Entity-relationship diagrams and database design
45 min
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File-based and relational databases
45 min
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Normalisation to third normal form
50 min
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Character sets: ASCII, extended ASCII, Unicode and EBCDIC
40 min
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Negative binary integers and binary arithmetic
50 min
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Number systems: binary, denary, hexadecimal, octal and BCD
45 min
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Data security, privacy and integrity
45 min
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Protecting systems and data: accounts, authentication and defences
55 min
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Threats and vulnerabilities to computer systems
55 min
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Data types and records
55 min
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Artificial intelligence: applications and social impact
45 min
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Copyright, software licences and intellectual property
50 min
36 more lessons in this topic. Join to read every lesson, or see what Full access includes.
Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
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