411 REFERENCE · Wikibooks
A-level Computing 2009/AQA/Problem Solving, Programming, Operating Systems, Databases and Networking/Real Numbers
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
3 Specification link : Floating Point Numbers
Describe the format of floating point numbers, including the concept of mantissa and exponent and the need for normalisation.
Only Two’s Complement representation of mantissa and exponent needs to be covered (IEEE standard does not need to be covered)
/Floating point numbers/
/Normalisation/
3 Specification link : Floating Point Numbers
Explain the limitations of representing real numbers in a computer system, and how errors occur.
Significant digits
Precision
Rounding errors (absolute errors, relative errors)
Cancellation Error
Underflow
Overflow
/Errors/