An early text-processing system stores textual data using the 7-bit ASCII standard.
Describe the 7-bit ASCII character encoding standard, explaining how characters are represented and the maximum number of unique characters that can be defined.
40 exam-style questions on Edexcel GCSE Computer Science Data representation, covering Encoding characters with 7-bit ASCII, Representing bitmap images in binary, Representing analogue sound in binary, and Limitations of binary representation. Each one has a worked solution and a mark scheme showing where the marks go.