Text characters are often represented in legacy computer systems using the 7-bit ASCII standard.
Describe how characters are encoded using 7-bit ASCII, and explain why this standard is limited compared to modern encoding systems.
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.