Data structures
Which sort finishes first?
Race seven algorithms on the same array and compare their work.
Try the sorting raceComputer science & electronics
See it move. Try it yourself.
From sorting races to cache hits, explore how things work through interactive experiments.
Browse all lessonsPick your first experiment
Computer architecture
Will this address hit the cache?
Switch mappings to see why some accesses hit and others miss.
Explore cache mappingDatabases
Same data. Different reads?
Interleave transactions and compare what each isolation level reveals.
Explore transactionsExplore by subject
Coding Tests
Applications covers connected components and shortest paths. Advanced combines distances and scheduling in an evacuation problem. Each guide includes the original problem link, an interactive experiment, and solution code.
Computer Architecture
Follow instruction execution, pipelines, caches, and virtual memory.
Data Structures
Applications covers sorting, searching, ranges, trees, and hashing. Advanced covers divide and conquer, heaps, and shortest paths.
Databases
Explore indexes, JOINs, normalization, and transaction isolation with interactive examples.
Digital Logic
Build intuition for digital circuits with adders, memory, and ring oscillators.
Embedded Systems
Explore serial communication, PWM, sampling, and error detection.
Operating Systems
Experiment with CPU scheduling, memory management, and synchronization.
Learn by experimenting
- Predict the result before running.
- Step through and watch what changes.
- Change a condition, repeat, and compare.
These simulations model concepts for learning. Check the conditions and explanations on each page.
The person behind the projects
Explore my embedded systems and IoT research, development experience, and programs.