See how programs and systems really behave: step through algorithms, watch data structures change shape, and trace requests through large-scale architectures.
19 live simulators
Watch sorting, searching, trees, heaps and graph algorithms run one step at a time, with animated visuals you can pause and replay.
Class 11–12 · College & beyondClass 11–12 Computer Science: searching, sorting and stacks
Launch simulator: Algo Simulator
Build architectures from load balancers, caches, queues and databases, then watch traffic flow and see where they break.
College & beyondSoftware engineering: system design
Launch simulator: System Design Simulator
Draw cells on a grid, set birth and survival rules, and watch Conway's Game of Life and other automata produce gliders, oscillators and chaos.
College & beyondBeyond the syllabus: complex systems
Launch simulator: Cellular Automata
Tune separation, alignment and cohesion for a flock of boids and watch coordinated flocking emerge from simple local rules, with a predator option.
College & beyondBeyond the syllabus: complex systems
Launch simulator: Flocking
Generate a toy RSA key from two primes, encrypt and decrypt a message step by step, sign it, and see why factoring the modulus breaks the key.
Class 11–12 · College & beyondBuilds on Class 10 Maths: Real Numbers (primes); Class 11 Computer Science: cyber safety
Launch simulator: RSA Cryptography
Insert keys into a hash table, compare chaining, linear probing and quadratic probing, and measure collisions, cluster lengths and probe counts as the load factor grows.
College & beyondCollege data structures
Launch simulator: Hash Tables
Edit process arrival and burst times, then compare FCFS, SJF, SRTF, priority and round-robin schedules on a Gantt chart with waiting and turnaround times.
College & beyondCollege operating systems
Launch simulator: CPU Scheduling
Feed a page reference string through FIFO, LRU, Optimal and Clock replacement, change the number of frames, and compare page faults including Bélády's anomaly.
College & beyondCollege operating systems
Launch simulator: Page Replacement
Send memory addresses through direct-mapped, set-associative and fully associative caches, see tag, index and offset bits, and compare hit rates and conflict misses.
College & beyondCollege computer organisation
Launch simulator: Cache Mapping
Assign resources to processes, draw the resource-allocation graph, detect cycles, and run the Banker's algorithm to find safe sequences.
College & beyondCollege operating systems
Launch simulator: Deadlock
Compare a full table scan with a B-tree index lookup on generated data, change table size and query selectivity, and count the rows and pages each one touches.
Class 11–12 · College & beyondClass 12 Computer Science: Database Concepts and SQL
Launch simulator: Database Indexes
Interleave two database transactions step by step under different isolation levels and watch dirty reads, non-repeatable reads, lost updates and write skew appear or get blocked.
College & beyondCollege databases
Launch simulator: Transaction Isolation
Build an object graph with roots and references, drop roots, and watch mark-and-sweep and reference counting find garbage, including leaked cycles.
College & beyondCollege programming languages
Launch simulator: Garbage Collection
Type an arithmetic expression and follow it through tokenising, parsing into a syntax tree, stack-machine code generation and evaluation, with clear error messages.
College & beyondCollege compilers
Launch simulator: Compiler Pipeline
Toggle inputs on digital circuits from single gates to a half adder, full adder and SR latch, trace signal propagation, and generate truth tables.
Class 11–12 · College & beyondClass 11 Computer Science: Computer Systems (Boolean logic)
Launch simulator: Logic Gates
Step a deterministic finite automaton through an input string, edit its transitions, and see which strings it accepts, from binary divisibility to turnstiles.
College & beyondCollege theory of computation
Launch simulator: Finite State Machines
Encode 4 data bits with Hamming(7,4), flip bits in transit, compute the syndrome, and see single errors corrected and the limits when two bits flip.
College & beyondCollege networks and coding theory
Launch simulator: Error-Correcting Codes
Edit a 3 × 3 kernel and step through convolution pixel by pixel to see how blur, sharpening and edge detection transform a small test image.
College & beyondCollege image processing
Launch simulator: Image Convolution
Edit sample text, build its Huffman code tree, compare bit counts with plain and fixed-length codes and the entropy limit, and watch the bits decode one by one.
College & beyondCollege information theory
Launch simulator: Compression CodingSee the planned labs below, or pick another topic.