This student workbook is ideal for students, non-specialist teachers, NQTs any anyone who wants to learn more about data representation to gain confidence in the OCR GCSE (9-1) in Computer Science (J276) “2.6 Data representation” specification. Can be used in the classroom as a teaching aid, for self-study or as a revision tool.
This 58-page PDF which covers the theory and includes ready-to-use tasks and even includes the answers.
Table of Contents:
- Amount of storage space required
- Denary (base 10)
- Binary (base 2)
- Convert from binary to denary
- Convert from denary to binary
- Add binary numbers
- Binary Shifts
- Hexadecimal (base 16)
- Why is hexadecimal used?
- Convert from binary to hexadecimal
- Convert hexadecimal to binary
- Convert hexadecimal to denary
- Convert from denary to hexadecimal
- Number base notation
- Check Digits
- Binary codes to represent characters
- Character Set
- ASCII, extended ASCII and Unicode
- Colour Depth
- Calculating file size
- Converting binary into a bitmap
- How sound can be sampled and stored in a digital form
- Sample frequency / sample rate
- Bit rate / Resolution
- Calculate sound file sizes
OCR Data Representation
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