Number Bases
Decimal, binary, hexadecimal and why computers represent data using bits.
This is a selected public preview. It demonstrates the structure, learning levels and one short sample interaction. The eight complete chapters and paid activities are supplied privately after purchase.
A clear learning route
Eight focused, linked chapters
Students can work through the unit in order, revisit a specific topic or use the included all-in-one edition for whole-unit revision.
Converting Bases
All six conversion directions with clear examination methods.
Units of Information
Bits, bytes and decimal prefixes from kilo to tera.
Binary Arithmetic
Addition, overflow and logical binary shifts.
Character Encoding
Character sets, 7-bit ASCII and Unicode.
Representing Images
Pixels, colour depth and bitmap file-size calculations.
Representing Sound
Sampling rate, resolution and sound file sizes.
Data Compression
Huffman coding, run-length encoding, lossy and lossless methods.
Sample feature
Explanations at the right level
Select a level to see how the same idea can be presented with different depth.
Secure: Binary is a base-2 number system that uses only 0 and 1. Each position has a value twice as large as the position to its right.
Sample interaction
Try the Bit Bench
Select bits to build an 8-bit value. The decimal and hexadecimal representations update immediately.
1286432168421
Binary0000 0000
Decimal0
Hexadecimal00
Inside the complete unit
More active learning tools
Method MachineFollow number-base conversions step by step.
Pixel StudioExplore pixels, colour depth and bitmap size.
Sampling LabInvestigate how digital sound quality changes.
Huffman LabBuild and decode compressed bit patterns.
Complete interactive resource
Learn, practise and revise the full unit
The complete purchase includes a linked contents page, eight individual interactive chapters and an optional all-in-one edition. It works in a modern browser without installing specialist software.
£12.99 / AED 65