1.1A
Binary Trainer
Convert between binary and denary and build fluency with place values.
The Learning Hub/Topic 1
📦 Topic 1
Data Representation
Nine interactive trainers and labs take you from binary basics to compression. Learn the idea, practise it, test yourself, and build confidence one skill at a time — work through Topic 1 in order or jump straight to the area you need.
1.1B
Hex Trainer
Convert hexadecimal to and from binary and denary, and see why hex is used.
1.2A
Binary Operations Trainer
Add binary numbers and understand what happens when a byte overflows.
1.2B
Shifts & Negative Numbers Trainer
Logical shifts and two's complement for representing negative values.
1.3A
Text Representation Lab
How ASCII and Unicode turn characters into binary the computer can store.
1.3B
Image Representation Lab
Pixels, colour depth and resolution — and how they affect file size.
1.3C
Sound Representation Lab
Sample rate, sample resolution and how digital sound is captured.
1.4
Storage Units Trainer
Bits to bytes and up through the larger units, with real calculations.
1.5
Compression Lab
Lossy versus lossless, and how run-length encoding shrinks data.
📚 Want the written theory too? Read the Topic 1 lessons in the Knowledge Library, then come back to train.