Computer Systems
Computer Systems lessons
All Computer Systems lessons in sequence. Available lessons open directly; remaining lessons are shown so the full unit pathway is visible.
Available
13 of 14
Unit
CS
Progress
93%
CS1
Binary and positive integers
Data representation
Available
CS2
Two's complement
Signed integer representation
Available
CS3
Floating-point: mantissa, exponent, range and precision
Real number representation
Available
CS4
ASCII and Unicode
Character representation
Available
CS5
Bitmap vs vector graphics and filesize
Graphics representation
Available
CS6
Computer architecture: processor, registers, ALU, buses
Computer structure
Available
CS7
Fetch-execute cycle
Processor operation
Available
CS8
Performance factors: cores, bus width, cache, clock speed
System performance
Available
CS9
Environmental impact of intelligent systems and energy use
Environmental impact
Available
CS10
Computer Misuse Act 1990
Legal and security issues
Available
CS11
Tracking cookies and DOS attacks
Security threats
Available
CS12
Encryption: public/private keys, digital certificates and signatures
Cryptography and authentication
Available
CS13
Computer Systems revision and past paper practice
Exam preparation
Available
CS14
CS unit test
Unit assessment
Coming soon