AS/A Computer Science: Data Representation Home

Prior knowledge

As well as the topics listed below you are required to have a full knowledge of the topics covered in the GCSE Data representation unit which can be accessed via the link below. You can be tested on your knowledge in these areas as well as the new content below.

GCSE Data representation

Topics

Number systems and Units
Unsigned binary multiplication
Signed binary - two's compliment
Fixed point binary
Floating point binary
Absolute and relative errors
Range and precision
Normalisation of floating point numbers
Error checking
Vector graphics
Nyquist theorem and MIDI
Ceaser and vernam ciphers
Dictionary based compression
Data representation test